Abstract: A method of sealing at least a first seal surface to a second seal surface comprises the steps of placing a flexible ring member between the first and second seal surfaces and juxtaposing the first and second seal surfaces. The flexible ring member is compressed between the first and second seal surfaces. Thereafter, the flexible ring member is expanded into at least one of a first recessed area in the first seal surface and a second recessed area in the second seal surface, with at least one of the first and second recessed areas having a plurality of spaced apart pressure points that contact the ring member. This method of sealing assures that when the O-ring (flexible ring) permanently sets over time, it takes the shape that makes the seal effective for a long time under high temperature, high pressure.

Abstract: A sealing assembly on a constant velocity universal joint which comprises an outer joint part with at least one aperture at an axial end, an inner joint part having a driveshaft connected thereto and being inserted into said outer joint part, and further comprising rolling members effective between the outer joint part and the inner joint part and serving the transmission of torque. The sealing assembly includes at least one sheet metal element having an annular face, which rests on an end face of the outer joint part, with the outer joint part and the sheet metal element being clamped to one another. A first face—the annular face or the end face—has a surface structure, with planar contact faces and grooves provided therein. The respective other face—the annular face or the end face—forms a planar counter face.

Abstract: A process for leaktight sealing of a solid-state X-radiation detector. The detector includes an amorphous silicon detecting slab and a layer of scintillating substance. The slab has peripheral connection zones formed by the flexing of an anisotropic conducting film on the ends of conductive tracks arranged on the slab and external conductors. The flexing zone and at least the periphery of the scintillating layer are covered with an uninterrupted layer of impermeable material, for example by screen printing.

Abstract: A transom seal assembly for sealing an opening in a boat transom is provided. A propulsion system has a part thereof extending through the transom opening. The seal assembly comprises an inflatable seal between respective peripheries of the part and the transom opening to provide water-tight sealing relative to the interior of the boat even in the presence of a seal puncture condition.

Abstract: A process seal made of a material such as polytetrafluoroethylene is used as a microwave window in a radar tank level gauge. The periphery of the process seal is surrounded by a metal containment ring that is fitted to the periphery to limit the amount of expansion outwardly of the process seal material as well as provide for localized loading at the periphery for clamping pressures on the seal. Electromagnetic radiation shielding is provided not only by the containment ring, but also by an EMI shielding O-ring mounted in a groove on a sealing end of the containment ring. A process environmental O-ring is carried by the process seal in an outer shoulder groove that is enclosed by the containment ring.

Abstract: An inflatable seal system in a tool having opposed parts which are relatively movable together with the inflatable seal system therebetween. The inflatable seal system comprising a longitudinally extending seal cavity and a seal extending longitudinally along the seal cavity. The seal comprises an inflatable portion and an abutment portion for sealingly abutting against an opposing surface, wherein the inflatable portion remains in the seal cavity when the seal is deflated.

Abstract: A hydrodynamic seal efficiently protects an interior cavity of an enclosure from external elements. The seal has an upper portion having a recess formed in a center section of the upper portion. A lower portion, having a raised portion, abuts the upper portion and forms a passage between the two portions. The passage between the upper and lower portions is reduced in area along the recessed and raised portions. When air with water and/or dust passes through the passage, a velocity and pressure change occurs, thereby the water and/or dust is deposited in a channel. The water and/or dust flows along the channel and is exhausted to an external so that the water and/or dust is prevented from entering the interior cavity of the enclosure.

Abstract: A refrigeration sealing system for a refrigeration unit includes a trap-process tube coupled with and in communication with a compressor of the refrigeration unit for receiving refrigerant from a refrigerant source. The trap-process tube defines a passageway through which refrigerant flows from the refrigerant source to the compressor. The refrigeration sealing system for a refrigeration unit further includes an annular plug disposed within the passageway. The annular plug defines a bore for facilitating the flow of refrigerant through the passageway. The annular plug is further deformable to seal the passageway of the trap process tube.

Abstract: A seal and method of using a seal are provided. The seal has a convolution region and two legs extending therefrom, and the seal may be positioned in a cavity such that an inner side of an extending leg faces a lower pressure zone; and/or an outer side of an extending leg faces a higher pressure zone.

Abstract: A method of sealing sheet pile joints using a paraffinic product to seal the gripping elements of the sheet piles. The paraffinic products usable for sealing the gripping elements of sheet piles have a drop point lying between 100 and 140° C. and a cone penetration of between 20 and 50 mm/10. In a preferred embodiment, the paraffinic product contains at least 50% paraffin waxes, and may also incorporate mineral oils, bonding agents, antioxidants and/or other normal additives. According to another embodiment, the paraffinic products usable for sealing the gripping elements of sheet piles have a resistance to hydrostatic pressure of at least 0.12 bar/mm, preferably at least 0.22 bar/mm.

Abstract: An O-ring shaped annular rib (63) is disposed around the outer periphery of a flexible diaphragm member (62), and grooves (70, 71) are formed in first and second resin members (60, 61) for receiving the annular rib (63) in the compressed state. A hollow space is defined between the first and second members (60) for holding the diaphragm (62) in the clamped state. A contact surface (64) where the first and second synthetic resin members (60, 61) come into contact with each other, is located outward of the grooves (70, 71), and is subjected to welding with a supersonic welding tool (65). A gap (76) is formed between the first synthetic resin member (60) and the supersonic welding tool (65), which gap disappears as the welding progresses. At this time, further progress of the welding operation is inhibited by allowing the first synthetic resin member (60) and the supersonic welding tool (65) to provide a predetermined compression for the annular rib (63).

Abstract: An interface seal for a turbine engine including a rotor shroud hanger including at least one opening, an outer band including an aft rail, and a seal spring mounted in the opening and extending over an interface between the outer band and the shroud hanger, is described. The seal provides a barrier that prevents the leakage of high pressure cooling air through the interface into the combustion gas flowpath bypassing turbine engine components, and thus forces the high pressure cooling air through the necessary turbine engine components.

Abstract: An inflatable seal system in a tool having opposed parts which are relatively moveable together with the inflatable seal system therebetween. The inflatable seal system comprising a longitudinally extending seal cavity and a seal extending longitudinally along the seal cavity. The seal comprises an inflatable portion and an abutment portion for sealingly abutting against an opposing surface, wherein the inflatable portion remains in the seal cavity when the seal is deflated.

Abstract: Disclosed is a method for implementing a vacuum seal between an interface of a transport chamber interface port of a transport chamber and another chamber. The transport chamber being configured to mate with the another chamber in an adjacent relationship. The method includes placing an insert plate having a sealing surface containing a first O-ring into the transport chamber interface port such that the first O-ring is sandwiched between the sealing surface and a surface of the another chamber. Therefore, a vacuum seal is achieved between the transport chamber and the another chamber within the transport chamber interface port via the first O-ring.

Abstract: A method of making an expandable metal gasket by forming an expandable core and spreading the core to an open condition with a parallelogram linkage tool, an expandable gasket body, and an expandable gasket precursor. The application also discloses a method of making a semi-rigid gasket having elastomeric bridges holding a series of core segments together.

Abstract: An apparatus for injecting sealant into the packing chamber of a valve requiring no venting of pressure within the valve. The apparatus which includes an interior valve is attached to the valve body by drilling and tapping a connection or by friction welding. A high pressure packing gland is attached to the apparatus and a drill bit is passed through the combination to complete an opening into the packing chamber. The drill bit is withdrawn past the interior valve, which is closed and then out of the combination. The packing gland is removed and a sealant injection device attached. The interior valve is opened and sealant injected into the packing chamber. The valve is closed, a completion plug installed into the end of the fitting, and a completion cap with a sealing ring is installed over the entire valve and fitting, thereby forming multiple redundant seals.

Abstract: A vacuum chamber according to the present invention has a plurality of plates arranged to be joined together by using bolts to form an internal space, a sealing member continuously disposed along joint lines on the inside portion of the vacuum chamber facing the internal space in order to seal joint portions among the plates, and pressing members secured to the plates by bolts so as to hermetically press the sealing member against the joint portions among the plates.

Abstract: A sealing strip (5) for a hem flange between two panels (for example, the inner and outer panels (1, 3) of a vehicle door) comprises an inner portion (9) of a tacky, sealing material with an outer part (10) of a non-tacky material, providing the strip with a rounded, shape-retaining, outer surface. To seal the hem flange, the strip (5) is pressed into place along the edge of the flange so that the inner surface (7) of the strip adheres to the panels and the rounded outer surface (10) extends from one panel to the other and covers the tacky material.

Abstract: A sealing assembly is disclosed for creating a seal between first and second mating members or components. The sealing assembly basically includes a seal retainer with one or more annular seals coupled thereto. The seal retainer including a substantially flat body portion lying in a plane and with at least one resilient retaining element integrally formed with said body portion as a one-piece, unitary member for engaging the seal(s) to retain the seal(s) thereto.