Abstract: A seal is provided around a shaft extending through a cavity in a hydrogen cooled generator. The seal includes a plurality of brush seal structures adapted to reduce flow to/from the cavity to a level where the risk of creating an explosive mixture of gases is minimized. In an embodiment of the invention, a series of brush seals are provided to interface with the rotary shaft so as to define a seal for minimizing the flow of hydrogen out of the cavity. In one preferred embodiment, the seal is composed of first and second brush seal assemblies, each of which is comprised of a plurality of brush seal structures. In another embodiment, spring(s) are provided to urge the brush seal structures into sealing engagement with the rotor. If deemed necessary or desirable, a vent outlet is provided in a cavity wall remote from the hydrogen atmosphere, to remove hydrogen that has leaked through the brush seals.

Abstract: A unitary removable barrier for installation in a cylindrical water line to selectively block the water line to passage of water therethrough. The unitary removable barrier is composed of a single piece rubber body having at least one cylindrical section sized to receive upstream and downstream pipes of the water line. A unitary rubber planar disc molded with the cylindrical section is of a circular circumference and which completely blocks the water line but which is selectively removable from the cylindrical section thus removing the barrier to the passage of the water through the line.

Abstract: A method and apparatus for a gasket with a molded-in bolt retention means is herein provided. The apparatus includes a gasket carrier encased in a silicone rubber gasket, with the gasket carrier containing a series of holes. The holes in the gasket carrier are preferably in a star-shape and secure the bolt in place when the bolt is pressed through the opening. The method of assembling the gasket is also provided, the method including the steps of encasing the gasket carrier within the gasket, attaching an associated cover to the gasket, sliding the associated bolt through the various openings, and securing the bolt in place.

Abstract: The present invention is a pipe sealing gasket designed for receipt within a bell pipe groove, the bell pipe also having an inside surface. The gasket fitted within the groove allows a spigot pipe having an outside surface to be inserted therein to form a continuous pipe joint. The gasket can be best described with reference to a horizontal axis drawn parallel to the central axis of the bell pipe, the gasket comprising a ring shaped elastomeric body which, when viewed in cross section, includes a leading nose region joined to a lower compression region by a spigot ramp. The gasket also has a socket bulb region joined to the leading nose region by a concave section and a tail portion. The tail portion or the gasket is joined to the lower compression region by a spigot face seal and joined to the socket bulb region by a belling face seal in continuity with a belling ramp.

Abstract: A split mechanical face seal having a rotating seal assembly comprising a rigid seal ring of split ring segments and a pair of attachable body ring segments holding the rotating seal ring segments together when the body ring segments are attached, a stationary seal ring assembly comprising a rigid seal ring of split ring segments and a pair of attachable housing segments holding the stationary seal ring segments together when the housing segments are attached, a single segment retainer ring having a split forming first and second opposing end faces, the retainer ring being made of a flexible material, the retainer ring being operatively engaged with the stationary seal ring segments and resilient members carried by the retainer ring and operatively engageable with axially facing abutments formed in the housing segments when the housing segments are attached such that the retainer ring exerts a biasing force against the stationary seal ring segments in a direction toward the rotating seal ring segments.

Abstract: Gasket for sealing between flanges in a pressurized fluid system. A central opening is disposed within an inner periphery of the gasket, the inner periphery being curved toward the central opening. Fluid pressure on the inner periphery is reacted by hoop tension in the gasket. The outer periphery of the gasket has concave segments between fastener holes so the area of the gasket is substantially less than the area of the flanges. In this manner, the clamping pressure exerted by the flanges on the gasket is increased.

Abstract: A sealing ring is provided for non-hermetic fluid seals with a restricted passage between sealing elements rotating relative to one another the sealing has a carrier and at least one sealing rib extending radially on the outside or inside around the carrier. The edge of each rib forms a flow restriction with an opposing running in surface, with the sealing rib presenting an abrasive geometry. Each sealing rib has for the most part a smooth, rotationally symmetrical contour, and one or a few cutting elements are arranged at one or a few points on each sealing rib so that each element projects radially and axially on one or both sides from the sealing rib contour.

Abstract: Door edge seal and retainer assemblies, particularly adapted for swing doors of motor truck and similar cargo containers, include elongated channel shaped retainer parts adapted to be mounted on the panel edges of the cargo container doors and comprising generally channel shaped members adapted to be secured to the panel edges. One or more elongated seal lip parts are integrally joined to the retainer part and may be cut away to provide access to one or more slots formed on the retainer part to receive flanges of replacement seal lip members for mounting the replacement seal lip members on the retainer parts without removing them from the panel edge in the event of damage to the original seal lip parts. The integral seal lip parts and retainer parts are preferably coextruded of polyvinylchloride wherein the lip parts are more flexible and of a lower hardness than the retainer part.

Abstract: The lip-type seal comprises six members including the external annulus (20), the first seal member (30), the reinforcement member (40), the retention member (50), the second seal member (60) and the internal annulus (70). The first seal member (30) is made of elastomer and the second seal member (60) is made of synthetic resin. The reinforcement member (40) is formed as the insertion member in the first seal member (30) so that the reinforcement member (40) extends as far as the end of the hermetic space side of the first seal member (30) and the first seal member (30) exists on both sides of the reinforcement member (40). The reinforcement member (40) has flexibility to provide an appropriate tension which is generated by the deflection thereof, to the seal part (31a) when the inner pressure P in the hermetic space A becomes high, in a condition that the lip-type seal is attached to a compressor.

Abstract: A piston and split piston ring assembly having a piston ring locator to prevent substantial rotation of the piston ring in a ring groove. A notch is provided in a wall of the ring groove and an abutment pocket is formed by the ends of the split piston ring. The piston ring locator is a flattened wire clip within the groove between the piston ring and the wall of the groove. A segment of the clip is displaced into the notch and another segment is displaced into the pocket.

Abstract: A shaft extending from a housing is rotatably sealed with the housing using a split seal assembly. During installation of the assembly, an alignment pin on one half of the assembly engages an oblong recess with planar sides in the other half of the assembly to permit radial movement of the two halves toward each other while preventing relative axial movement between the two halves. The permitted radial movement facilitates the assembly of the seal to the shaft while the limitation on relative axial movement maintains the correct positions, of the two halves. The permitted radial movement allows the two halves to assume fill circular engagement with the shaft to optimize the seal and the mechanical engagement with the shaft.

Abstract: An in-stream sample collection and conditioning system which is easier to implement and maintain, more cost effective, and more reliable than existing systems. The preferred embodiment of the present system contemplates a modular system adaptable to a variety of diverse configurations and criteria, the system having incorporated therein a base piece formed of interconnecting modular base members, the base piece having fluid passageways formed therein to provide fluid flow between the adjacent base member. Situated adjacent to each of the modular base members forming the base piece are modular conditioning components, each selected from a field of diverse conditioning types and configurations, and adapted for the contemplated use.

Abstract: A shaft seal device including a casing having a hollow portion, a rotable shaft extending inside the casing from a sealed fluid region to an outer region, a non-contact type first mechanical seal arranged between the casing and the shaft so as to divide the hollow portion into the sealed fluid region and a purge region located between the sealed fluid region and the outer region, and a second mechanical seal arranged between the casing and the shaft so as to divide the hollow portion into the purge region and the outer region.

Abstract: A seal structure of the present invention is composed of a sliding member 2, a supporting member 1 which stores the sliding member 2 slidably, and a seal ring 5 provided between the sliding member 2 and the supporting member 1. The seal ring 5 is formed by a lip section 10 on which a pressure of a hydraulic operating fluid acts and a heel section 11 for supporting a working pressure. Since the seal structure is such that an annular pressure receiving area between an inner circumference and an outer circumference of the lip section 10 is smaller than an annular supporting area between an inner circumference and an outer circumference of the heel section 11, a pressure which acts on the seal ring 5 is reduced and deformation to a sliding surface side of the heel section 11 is prevented.

Abstract: A corrosion resistant gasket for aircraft, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during installation to the threads of attaching hardware utilized between the instrument, antenna, and aircraft structure, thereby reducing corrosion through the attaching hardware, by providing a hermetic seal around the periphery of the envelope of the attached device.

Abstract: A sealing arrangement is designed for sealing a space that extends between high and low pressure areas and that is defined between a first apparatus part and a cylindrical surface of a second apparatus part, the first and second apparatus parts being mutually moveable in a reciprocating manner along the axis of said cylindrical surface. The sealing arrangement includes an annular sealing member of resilient material having a radially outer peripheral surface extending between axially opposite first and second end surfaces facing the high and low pressure areas, respectively, and a radially inner peripheral surface for providing a sealing engagement with the cylindrical surface of the second apparatus part at a contact area, and for defining with the cylindrical surface a first space widening or diverging from the contact area toward the low pressure area.

Abstract: A sealing system for a gap-free seal for a product chamber has a first structural part having a first flange surface and a first sealing surface. It further has a second structural part having a second flange surface and a second sealing surface. The first and second structural parts are connected to one another via the first and second flange surfaces and form a component of the product chamber. At least one sealing element is inserted between the first structural part and the second structural part and rests against the first and second sealing surfaces without a gap remaining between first and second structural parts. The first and second sealing surfaces are turned so as to be swirl-free. The first and second flange surfaces have a burr-free transition into the first and second sealing surfaces, respectively, and the burr-free transitions provide a sealing line.

Abstract: A brush seal is comprised of arcuate seal segments having ends cut in a radial direction with bristles “canted” at an approximate 45° angle relative to radii of the segments, leaving triangular regions adjacent one end of each segment devoid of bristles at the segment interfaces. The brush seals are retrofit into conventional labyrinth seals with the backing plate for the bristles comprising a labyrinth tooth profile extending fully 360° about the seal, including those areas where bristles are not present. The sealing capacity is not substantially degraded, while affording significant sealing improvements over conventional labyrinth seals. Additionally, when retrofit into labyrinth seals with radial movement, the individual labyrinth seal segments are free to move radially independently of one another during transients.

Abstract: An oil sealing assembly for injector wires includes a cylindrical guide member inserted into an opening formed on a cylinder head lip, a sealing member inserted into the opening after the insertion of the guide member, and a plug fixedly mounted on the cylinder head lip for pushing the sealing member.

Abstract: A non-corrosive metallic sealing assembly is disclosed. The assembly has a first sealing surface and a second sealing surface with a gasketing member being interposed between the first and second sealing surfaces. The gasketing member has a top sealing surface engaging the first sealing surface and a bottom sealing surface engaging the second sealing surface, respectively. The gasket member is preferably a flat washer made of a super-elastic alloy, such as nitinol, wherein the gasket member elastically bends to effect a seal between the first and second members when its sealing surfaces are fully engaged.