Abstract: The object is to provide a filter element extracting jig which facilitates the extracting operation of a filter element from a housing of a filter device and prevents its contamination. A filter element extracting jig is formed from an elastic plate and comprising a supporting portion, a spring portion extending at an acute angle with the supporting portion, a hook portion extending toward the supporting portion, and an operating portion extending from the hook portion at substantially right angles, which are constructed by bending at bent portions substantially parallel to each other in that order.

Abstract: A filtration apparatus having a cover pivotably installed through a hinge mechanism has a casing bracket secured to a casing flange and a cover bracket secured to the cover. A pin is inserted through insertion holes in side walls of the casing bracket and through insertion holes in side walls of the cover bracket. The filtration apparatus is provided with a stopper mechanism for maintaining the cover in a full-open position when it is fully opened, and also provided with a stopper-releasing mechanism for canceling the stopper function.

Abstract: A hand-held, electrically-powered pool cleaner includes a body and a nozzle for suctioning pool water. The body has a filter, an impeller and motor, rechargeable batteries, and a handle for carrying the body and for maneuvering the nozzle along a surface being cleaned the surface. The impeller draws pool water through the nozzle and the filter to remove debris water. A filter housing disposed between the nozzle and the body accumulates the filtered debris. The body optionally includes a pole attachment member to receive the free end of a pole for maneuvering the cleaner from outside of the pool.

Abstract: A device for cleaning liquids, in particular edible oils, by means of a filter in a filter housing, the filter being connected downstream of a pump, and a motor for driving the pump, which has a rotor having a rotor disc with vanes in an immersion housing being provided in a housing, the housing, immersion housing and filter housing together forming a unit which can be at least partially introduced into the liquid which is to be cleaned and removed therefrom.

Abstract: A floating, multi-directional liquid skimming device, comprising a perimeter frame attached to a net, where the frame rotates relative to a central axis. A central axis element may be attached to a pole handle. Floatation elements can be located along the central axis. In operation, the frame floats at rest with the frame roughly parallel to the surface of the liquid, and where the top edge of the frame is above the liquid surface to retain collected debris. When the device is pulled toward the operator, the frame swivels relative to the surface, so the frame opening is facing the direction of travel, enabling capture of floating material. When the skimmer motion is stopped, inherent floatation causes the frame to quickly swivel back to the resting position. If the skimmer is pushed away from the operator, the frame opening swivels to face the new direction of travel.

Abstract: An apparatus for irradiation of a fluid with UV light includes a tubular body consisting of UV-permeable material. The body includes a fluid chamber and openings for passage of fluid. A UV source is provided to subject the chamber to the UV light. Light baffles define an irradiated section of the chamber to prevent light penetration beyond the irradiated section while permitting the fluid to flow through. The apparatus is provided as a component in a housing having a modular design. The modules include a back cover for surface mounting. The body is mounted to the back cover. An inner cover is attached to the back cover. The inner cover includes the UV source and modular electronics. A front cover is attached to the inner and back cover. Heat sink elements are provided to control the heat produced in the apparatus.

Abstract: A system for separating particles from fluid which includes a receptacle for containing the fluid, a lid for covering the receptacle, and a filter assembly which includes a filter component shaped to fit the receptacle, an o-ring encircling the perimeter of the filter component for securing the filter assembly in the receptacle, and at least two baffles attached to the bottom of the filter component for reducing the motion of the fluid around and through the filter assembly.

Abstract: An environmentally friendly dual lube venturi filter cartridge which has no metallic components. A plastic centertube having a venturi section supports a bypass filter element on standoffs molded into the centertube. An outer concentric full flow filter element surrounds the bypass filter. The full flow filter is supported on a plastic centertube which creates a gap between it and the bypass filter. A first bypass filter endcap both seals the bypass filter and provides standoffs for allowing full flow oil around the bypass filter. The standoffs thus split the full flow which progresses through the primary filter in two paths, a primary path around the bypass filter and into the centertube, and a bypass path through the secondary filter and the venturi. Plastic upper and lower endcaps carry grooves for simple sealing gaskets, a radial seal gasket on the bottom which seals against both the endcap which carries it and a flange in the housing, and an axial seal gasket at the top.

Abstract: A trash trap for liquid manure disposal systems that has a cylindrical housing with an open interior. The housing has a first end with an inlet port and an outlet port in its side wall. The cylindrical housing also has a removable cylindrical filter that has a fluid opening in its side walls and is detachably mounted along a centerline of the housing. The cylindrical filter has a diameter that is less than the inner diameter of the housing so that fluid can enter the housing through the inlet port and exit through the outlet port. Also, on the second end of the housing there is a detachable cap around an access opening.

Abstract: A system to restrict and remove debris and pollutants from runoff water received from surrounding areas. A receptacle receives the runoff water, and a grate detains the heavier part of its solids burden. A first screen within the receptacle detains solids of lesser size. Water passed by the first screen encounters a tubular second screen in the receptacle which passes water that was additionally screened by it and sends it to a downstream system. A weir at a sensitive level in the receptacle can by-pass the second screen. The second screen is preferably rotatable.

Abstract: A swimming pool cleaning apparatus that includes a housing with a substantially hollow cavity that runs along the longitudinal axis of the housing; a handle means mounted to the housing for providing directional control and movement of the housing; a wheel means movably mounted to the housing for facilitating forward, backward, and angular movement of the housing along a swimming pool surface; a debris agitator means rotatably attached to the housing to facilitate water movement through the housing and the removal of debris from the swimming pool surface; a scraping means attached to the bottom of the housing for scraping the swimming pool surface; and a debris collection means detachably connected to the housing that filters debris from pool water and that allows filtered pool water to exit from the debris collection means.

Abstract: The present invention provides a WTS closure assembly that is easily and quickly secured to and removed from the filter chamber of a WTS. The closure assembly of the present invention provides a bail handle attached to the closure and which utilizes a mechanical advantage, preferably in the form of a pivoting handle which presses a plurality of cams onto the WTS housing, thereby breaking a seal between the closure assembly and the WTS filter chamber, and lifting the closure away from the filter chamber.

Abstract: A fluid filter is provided with a snap-together housing for the filter media. The housing is designed with two main parts that are easily snapped together to encapsulate the filter media. The filter housing is substantially cylindrical, and contains an inlet on one end of the filter and an outlet on the opposing end. The filter can be designed so as to be opened for the replacement of the filter media.

Abstract: An open-air filtration device cleans swimming pools and hot tubs in an efficient, reliable manner. An open-air filter with a suction chamber unit comprises two scrubbing brushes and an impeller powered by a motor drive. Water containing debris is pumped to a level above the swimming pool or hot tub surface. The debris containing water is discharged through a spout into a filter tube. A filter element associated with the filter tube, and open to atmosphere filters the debris containing water by gravitational forces solely. The spout and filter tube are, optionally, attached to a pole that manually propels the suction unit. They may alternatively be attached to a floating platform that floats on the water surface of the pool or hot tub. If filter efficiency decreases, the water level in the filter tube rises, indicating that the filter element must be replaced. A rise in water level is visually observed or detected automatically and communicated using a visible or audible alarm.

Abstract: A filter assembly includes a housing and an inner post with a fluid inlet passage extending in the housing. An outer post surrounds the inner post to define a fluid outlet passage. A filter cartridge is received around the inner post and the outer post. The filter cartridge includes a filter element. A first endplate, which defines a first opening, is attached to a first end of the filter element. A first seal is received in the first opening to seal between the inner post and the first endplate. A second endplate, which defines a second opening, is attached to a second end of the filter element. A seal is received in the second opening to seal the outer post with the second endplate. The housing and the filter cartridge define an outer cavity. The fluid inlet passage opens into the outer cavity to minimize back flushing of contaminants.

Abstract: A hand-held, electrically-powered pool cleaner includes a body and a nozzle for suctioning pool water. The body has a filter, an impeller and motor, rechargeable batteries, and a handle for carrying the body and for maneuvering the nozzle along a surface being cleaned the surface. The impeller draws pool water through the nozzle and the filter to remove debris water. A filter housing disposed between the nozzle and the body accumulates the filtered debris. The body optionally includes a pole attachment member to receive the free end of a pole for maneuvering the cleaner from outside of the pool.

Abstract: A flat foldable filter funnel having open and flat-folded configurations includes a base having an elongated aperture, and a generally wedge-shaped filter support. The filter support includes at least two opposing pleated walls, and at least two opposing sidewalls connected at a first end of the filter support to define a fluid flow aperture. At least a portion of the filter support extends through the elongated aperture. The filter funnel may also include a fine mesh adjacent to the fluid flow aperture. The filter funnel may be adapted to include a plurality of fluid flow apertures located on the sidewalls and pleated walls.

Abstract: An inline dispenser and purification device combination comprising an inline dispenser having fluid ports directly mateable to the ports of a fitted cartridge and a universal cartridge having no ports for connection with the fluid ports of the inline dispenser and a method of replacing a fitted cartridge located within a inline dispenser with a universal cartridge having no ports for connection with the fluid ports of the inline dispenser.

Abstract: A filter cartridge includes a filter element that is adapted to filter fluid. The filter element defines a center post cavity constructed and arranged to receive a center post. The filter element has a first end and a second end. A first end plate is attached to the first end of the filter element. The first end plate defines a first end plate opening. A second end plate is attached to the second end of the filter element. The second end plate defines a second end plate opening. A seal is positioned in the second end plate opening to seal around the center post. A floating seal assembly is received in the first end plate opening to seal around the center post. The floating seal assembly includes a gasket and a gasket retainer. The gasket retainer retains the gasket against the first end plate to seal around the center post.

Abstract: A waste water outlet unit, for a shower tray having a drain opening, comprises a base element which is locatable on the underside of the shower tray to cover the drain opening, and a clamp element which is locatable on the topside of the shower tray and which is engageable with the base element to clamp the base element to the underside of the shower tray. The clamp element has an aperture through which waste water from the shower tray can pass into the base element, and a filter element which is positionable over the aperture and which can be removed to enable access to the interior of the unit while maintaining the engagement between the base and clamp elements.

Abstract: A fryer filtration arrangement includes an oil drain pan and associated filter assembly. The filter assembly may be removably connected to the pan by a friction fit coupling arrangement. The pan may be positioned in latch-free movable drawer. The fryer vat may be shaped such that particulate matter settles therein along a substantially linear region and oil circulated during a filtration operation may flow along the substantially linear region to push the settled particulate matter to the pan and filter assembly.

Abstract: A filter cartridge assembly, and method for constructing the same, wherein the assembly has at least two axially adjacent filter cells separated by a spacer ring and a lifting means having a mounting portion with an opening formed therein for surrounding the outer periphery of the spacer ring. The lifting means also includes opposed elongated arms which extend radially outwardly from the central mounting portion and have gripping portions for facilitating lifting the filter cartridge assembly.

Abstract: A drilling water filter (1) with a self-cleaning system including a filter container (2), a cover (3) and a filter element (6) that can be inserted in the flow arm between an inlet (4) and an outlet (5) for separation of solid material from the fluid. The cover (3) has a displaceable carrying handle (7) for transporting the drilling water filter. The carrying handle (7) is connected with at least one self-cleaning means, in a controlled manner.

Abstract: This invention is a filter for a street curb inlet catch basin that comprises a removable filter basket assembly, a funnel to channel storm water into the basket, and a support structure that holds the filter in place within the basin by means of bracing the structure against the basins interior walls without altering the interior walls of the basin.

Abstract: A portable pool cleaning system for the remote cleaning of a swimming pool including a housing and a base. A motor is connected to the housing and is attached to a high pressure pump wherein the pump includes both intake and ports. The first tubing is connected to the intake port and the opposite end is inserted into the swimming pool for the transportation of water from the swimming pool to the pump. A second tubing is connected to an output port of the high pressure pump with the opposite end of the second tubing placed into the swimming pool and attached to a self-propelled cleaning device. The self-propelled cleaning device uses a high pressure water stream as a scrubbing function. The motor is connected to a timer which is connected to a power source. The timer initiates the activation and deactivation of the motor and the self-propelled cleaning device. A means for attaching the base and portable pool cleaning system to the periphery of the swimming pool is also included.

Abstract: Apparatus and methods for drain strainer installation and maintenance are disclosed. In one embodiment, a drain strainer assembly includes a housing having an interior chamber and defines an opening leading to the interior chamber. Inlet and outlet ports are disposed through the housing, and at least one coupling device couples the housing to a support wall such that the opening is at least approximately parallel with the support wall. The assembly further includes a strainer member positioned in the interior chamber at least partially between the inlet and outlet ports, and a door member covering the opening.

Abstract: A lint trap, including a housing having a first side wall, a second side wall, a top wall, a bottom wall, a back wall and a front wall, and the bottom wall defining an aperture; at least one attachment mechanism joining the housing to a utility sink; a lint collection plate slot defined in the side walls; a lint collection plate, the lint collection plate being slidably received within the lint collection plate slot; and an adapter having a hose end and a trap end, the hose end being adapted to join to a hose of a washing machine and the trap end being joined relative to the aperture defined in the bottom wall and a method of use including the steps of flowing water into a flow rate control chamber of a lint trap; flowing water from the flow rate control chamber to a water release chamber; flowing water from the water release chamber through a lint collection plate; removing the lint collection plate from the lint trap; wiping lint off the lint collection plate; and reconnecting the lint collection plate to t

Abstract: A strainer basket is used in conduits or fluid systems and includes a non-metallic strainer basket in which a bio-cide is disposed to combat algae and fungal buildup along the surface of the basket and/or in the openings of the basket.

Abstract: The present invention provides a method for removing an oil contaminant from a surface of an aqueous solution, comprising manually controlling a surface skimmer from a remote location to remove a layer or a batch of an oil contaminant from an oil-aqueous solution mixture by the skimmer, where the aqueous solution is contaminated by the oil as a result of an industrial process. The present invention also provides a system for carrying out the method, which comprises a surface skimmer, a collection means which is preferably a separator, a conduit connecting the skimmer to the collection means in an airtight fashion, and means for creating negative pressure in the skimmer, where the skimmer is capable of manual control from a remote location; in further embodiments, the system further comprises an air filtering means.

Abstract: A T-handle for a filter includes an integral mechanical indicator. The T-handle indicator has a threaded portion that extends through a hole in the filter cover and retains the cover to a canister. The indicator includes a spring-biased button that provides a visual indication of whether the element needs to be replaced. The button is received in a body that is open to the pressure on the downstream side of the filter element. A pair of clips on the button engage the indicator body to retain the button in the inward (element change) position. The clips can be accessed when the T-handle indicator is removed from the filter to return the button to the outward (fresh element) position. The indicator button includes an axially-elongated slot extending radially through the button, and the body includes a corresponding pair of holes on opposite sides of the slot.

Abstract: A bowl-cartridge filter includes a filter cartridge and a bowl. The filter cartridge includes an interlock arrangement that is oriented to engage the filter bowl, when the filter cartridge is mounted in the filter bowl, and the bowl is rotated in a direction to remove the bowl-cartridge filter from a filter head. The filter bowl includes a cooperating interlock arrangement that engages the interlock arrangement on the filter cartridge. Example embodiments include cog arrangements, which include a plurality of projecting teeth. Various shapes for the teeth are possible, including house-shaped, truncated A-shaped, and pie wedged shape.

Abstract: The present invention relates to a point-of-use water treatment system unit (10). The unit (10) includes a filter housing assembly (60) having a filter tank assembly (66) and a closure (64) which utilizes a handle and (152) cammed reciprocating lock blades (146, 150) to secure the closure to the filter tank assembly (66). A UV tank assembly (300) includes a planar baffle (322) and a vaned baffle (324) to induce plug flow about a UV lamp assembly (280). The UV lamp assembly (280) is used which simultaneously electrically and sealingly mounts to UV tank assembly (300) and electrical cap assembly (290) using a bayonet mount. A bi-planar manifold assembly (40) is used to interconnect components of the WTS unit and to provide an envelope for accommodating a water pipe assembly (34). The bi-planar manifold assembly (40) enhances the compactness of the design of the WTS unit (10).

Abstract: A filter for use in a waste water discharge system including a first channel defining a receptacle for a filter and a second channel connected generally orthogonally to the first channel providing an outlet from the filter receptacle. The filter has an axial support of a pre-selected length, a plurality of bristles fixed to the axial support extending radially outward to define an outer margin. The outer margin of the bristles, at some portions along the pre-selected length, are at least equal to an inside dimension of the channel defining the receptacle. A handle is fixed to the axial support facilitating the placement and withdrawal of the filter element in the filter receptacle. A shield member is provided that is generally conformable to the inside surface of the filter receptacle. The shield member has a length dimension sufficient to cover the outlet leading to the second channel for blocking any flow of waste water into the second channel during replacement of the filter element.

Abstract: The present invention relates to the latch-assisted lid extractor. The present invention includes a canister and a lid connected to the canister via a latch assembly. The latch assembly includes an over-center lock to removably secure the lid to the canister. Additionally, the latch assembly can be moved from a first position sealing the canister with the lid to a second position urging the lid away from the canister. The present invention provides a mechanism that can both securely latch or fasten a lid to a canister and at the same time assist in removing the lid from the canister to enhance ease of operation.

Abstract: A hand-held, electrically-powered pool cleaner includes a body and a nozzle for suctioning pool water. The body has a filter, an impeller and motor, rechargeable batteries, and a handle for carrying the body and for maneuvering the nozzle along a surface being cleaned the surface. The impeller draws pool water through the nozzle and the filter to remove debris water. A filter housing disposed between the nozzle and the body accumulates the filtered debris. The body optionally includes a pole attachment member to receive the free end of a pole for maneuvering the cleaner from outside of the pool.

Abstract: A runoff drain filter is comprised of a tray for being supported inside a runoff drain. A plurality of separately removable cartridges are supported by the tray and aligned with holes in the tray. Each cartridge is comprised of a bucket and an insert. The insert is comprised of a central overflow tube centered in the bucket by a vented annular top plate and an annular bottom plate. Runoff pouring into the tray is directed into each bucket through the vented annular top plate. The runoff is filtered by a perforated tube which is part of the central overflow tube before it is discharged through an open bottom of the central overflow tube. Debris and contaminants are collected in the buckets. The total capacity of the filter is divided among the separately removable cartridges to enable a filled cartridge to be more easily lifted by an average person.

Abstract: A supporting structure for a fuel filter assembly provides a latch which is manually movable without the necessity of tooling into either a locking position or an unlocking position. By manually moving the latch, a collar of the fuel filter assembly can be freed to rotate about a supporting cover so that the reservoir can be removed. The assembly can also be manually removed from a support bracket without the use of tooling. The fuel filter assembly provides a resilient mounting system that isolates the fuel filter and its associated components from the vibrations that are inherent in an internal combustion engine.

Abstract: A strainer for straining food is disclosed wherein. The strainer includes a clamping device for clamping the strainer to a center partition of a sink.

Abstract: A drinking water filter assembly has a filter cartridge which includes a filter element contained in a pressure vessel for unitary disposal, the cartridge received on a base containing attachment fittings for ease in installation and replacement with limited exposure to contaminants during a filter change. A flow powered flow meter is provided which measures the quantity of flow through the filter for alerting the user to replace the filter cartridge.

Abstract: The present invention relates to a point-of-use water treatment system unit (10). The unit (10) includes a filter housing assembly (60) having a filter tank assembly (66) and a closure (64) which utilizes a handle (152) and cammed reciprocating lock blades (146, 150) to secure the closure (64) to the filter tank assembly (66). A UV tank assembly (300) includes a planar baffle plate (322) and a vaned baffle plate (324) to induce plug flow about a UV lamp assembly (280). The UV lamp assembly (280) is used which simultaneously electrically and sealingly mounts to UV tank assembly (300) and electrical cap assembly (290) using a bayonet mount. A bi-planar manifold assembly (40) is used to interconnect components of the WTS unit and to provide an envelope for accommodating a water pipe assembly (34). The bi-planar manifold assembly (40) enhances the compactness of the design of the WTS unit (10).

Abstract: A filtering apparatus including a filter cap with a releasable filter element is disclosed herein. The filter cap defines a filter chamber and includes an upper wall having an opening therein. An oil filter element is positioned in the filter chamber. A snap connection is provided within the filter chamber for releasable connecting the oil filter to the filter cap. Finally, an actuator having a portion extending through the opening into the filter chamber is provided. The actuator is operable is operable to eject the filter element from the filter chamber. The actuator is movably secured to the filter cap and is separable from the oil filter upon ejection of the filter element from the filter chamber.

Abstract: A bowl-cartridge filter includes a filter cartridge and a bowl. The filter cartridge includes an interlock arrangement that is oriented to engage the filter bowl, when the filter cartridge is mounted in the filter bowl, and the bowl is rotated in a direction to remove the bowl-cartridge filter from a filter head. The filter bowl includes a cooperating interlock arrangement that engages the interlock arrangement on the filter cartridge. Example embodiments include cog arrangements, which include a plurality of projecting teeth. Various shapes for the teeth are possible, including house-shaped, truncated A-shaped, and pie wedged shape.

Abstract: A device for washing, serving and storing berries, grapes and other fruits, etc., comprising a first container provided with a plurality of throughgoing openings so that when berries, grapes and other fruits, etc. are deposited in an interior of the first container and water is poured into it for washing berries, grapes and other fruits, etc., after washing water can flow out of the first container, and a second container which is substantially solid and formed so that the first container can be inserted into the second container so that water flowing out of the first container is accumulated in an interior of the second container and thereby the water is substantially removed from the berries, grapes and other fruits, etc. located in the interior of the first container, so that the device can be used for washing, serving and storing the berries, grapes and other fruits, etc.

Abstract: A filter head assembly is configured for connection to a water line and including at least two filter heads connected to each other for treating water supplied through the water supply line and at least one of the filter heads accommodating a replaceable filter bowl. The assembly includes at least one head housing having an inlet port, an outlet port, a central chamber in fluid communication with the ports and a bowl connection opening in fluid communication with the chamber. Each of the ports is pivotally connected to one of a tubular connector and an end plug fitting so that the head housing can pivot relative to the respective connector and/or fitting.

Abstract: This invention relates to a liquid filter which includes a housing and a rotatable lid for covering the opening in the filter housing. The housing incorporates the inlet port and the outlet port for the filter. The lid is secured to the housing by rotating movement in which cam followers carried by the lid engage cam members carried by the housing to cause the lid to be cammed downwardly upon the housing. As the lid is drawn down onto the housing, an annular seal carried by the lid engages the inner surface of the housing to form a seal between the lid and the housing, covering a side opening in the housing.

Abstract: A strainer basket is used in conduits or fluid systems and includes a non-metallic strainer basket in which a bio-cide is disposed to combat algae and fungal buildup along the surface of the basket and/or in the openings of the basket.

Abstract: A filter external to a tank including a vessel, a lid for closing the vessel, a removable connector including means of fixing the connector to the lid, a pipe for conveying water from the tank, a pipe for returning water to the tank, and couplings for connecting the two pipes to the connector, each coupling being equipped with a valve which selectively allows or prevents the passage of water, the connocter including a single means for allowing simultaneous actuations of the valves and actuation of the means of fixing the connector to the lid.

Abstract: A combined filter and skimmer assembly for ponds includes a submersible filter box containing replaceable filter media, the filter box having a water inlet, a skimmer coupling coupled to an upstanding conduit coupled to a skimmer head, and a water outlet adapted to be coupled to an underwater pump. According to the presently preferred embodiment, the filter box is rectangular with a removable lid. The lid has a raised central portion wherein lies the water inlet. The water inlet is preferably adjustable as to the size of the inlet. The skimmer coupling is also located in the raised portion of the lid and is spaced apart from the water inlet. According to the presently preferred embodiment, the skimmer head preferably includes a floating cup which automatically adjusts to the level of the surface of the pond. Optionally the floating cup is free to tilt to adjust for an angular difference between the surface of the lid and the surface of the pond.

Abstract: A caged filter cartridge assembly has a pair of coaxially spaced-apart end plates, and a number of tubular filter cartridges extending between said end plates. These end plates include seat recesses having a coaxially disposed retaining ring establishing an annular terminal lock edge. The filter cartridges include end caps at each opposed end thereof which are received within respective ones of said seat recesses. The end caps have at least one annular lock ring which is forcibly engaged with the terminal annular lock edge of the retaining ring so as to join the end cap, and thus said filter cartridge, to the end plates.

Abstract: An environmentally friendly dual lube venturi filter cartridge which has no metallic components. A plastic centertube having a venturi section supports a bypass filter element on standoffs molded into the centertube. An outer concentric full flow filter element surrounds the bypass filter. The full flow filter is supported on a plastic centertube which creates a gap between it and the bypass filter. A first bypass filter endcap both seals the bypass filter and provides standoffs for allowing full flow oil around the bypass filter. The standoffs thus split the full flow which progresses through the primary filter in two paths, a primary path around the bypass filter and into the centertube, and a bypass path through the secondary filter and the venturi. Plastic upper and lower endcaps carry grooves for simple sealing gaskets, a radial seal gasket on the bottom which seals against both the endcap which carries it and a flange in the housing, and an axial seal gasket at the top.