Abstract: An annular seal is made of a collapsible bellows. The bellows can function as an anchor or a seal and is easily set into position using relative component movement. The bellows folds can be slanted and their outer sealing edges can have different profiles to meet expected conditions. The bellows is expanded for insertion to reduce its outer dimension and sets by compaction as a result of relative movement. The bellows can be straight or tapered and is settable with a minimal axial force.

Abstract: An assembly for sealing the annular space between the inner cylindrical surface of a tubular member and the outer surface of a cylindrical member having a separate upper and lower seal member each of which are sealably and translatably positioned on the cylindrical member outer cylindrical surface, each of the upper and lower seal members having a circumferentially outwardly displaceable sealing lip and including a tubular actuator positioned between the upper and lower seal members having end portions for radially outwardly displacing the upper and lower sealing lips and including a downwardly displaceable seal energizer for moving the upper seal member towards the lower seal member to cause the actuator to concomitantly, radially outwardly expand the circumferential sealing lips.

Abstract: A sliding sleeve valve for controlling fluid flow between a well annulus and a string of well conduit, the valve including a slidable sleeve disposed coaxially within an outer housing, the valve being provided with a primary seal member carried by the housing for sealing engagement with the housing and the sleeve characterized in that the primary seal member, in a relaxed condition, comprises an annular, monolithic body having a first, radially outwardly facing, annularly extending seal surface and a second, radially inwardly facing, annularly extending seal surface, the second seal surface having at least one annularly extending, radially inwardly projecting rib, the rib having a radially innermost convex portion when viewed in transverse cross-section, annularly extending reliefs being formed on axially opposite sides of the rib, the seal member being made of a substantially non-elastomeric material that has sufficient memory to provide an interference seal between the seal member and the housing, and the s

Abstract: A seal system for sealing between a pair of members is provided wherein a pair of substantially aligned walls on inner faces of the members have internal frustoconical portions. A metal ring includes a pair of lips with external frustoconical portions which sealingly engage the internal frustoconical portions. The metal ring includes at least one convolution between the lips. The convolution permits axial extension of the metal ring upon application of external pressure to the ring.

Abstract: The inventive sealing assembly designed to be set by longitudinal compression is mechanically energized, and comprises an elastomeric sealing element and a flexible member in intimate contact with the sealing element, a flexible portion of the flexible member having an expanded and a retracted position, wherein the flexible member is able to forcibly expand the sealing element when the flexible portion of the flexible member is expanded, and further wherein the flexible member is able to forcibly retract the sealing element when the flexible portion of the flexible member is retracted.The flexible member preferably has a generally cylindrical shape and a plurality of longitudinal slots, and passes at least partially through the sealing element, such that the element covers both the outer and inner surface of the flexible member, as well as passing through the slots.

Abstract: The mechanical seal for movable joints of machines comprises at least two pairs of nonelastomer cylindrical rings (4, 5, 16) ground to each other with their faces and having their outer surfaces eccentrically displaced, and the rings themselves cooperate with an elastomer element (3, 15). One of the surfaces of the elastomer element (3, 15) (an outer or an inner one, respectively), has eccentrically arranged shoulders (17, 18, 19, 20) or borings (6, 7). The seal rings (4, 5, 16) have concentric cylindrical surfaces and are fitted on the shoulders (17,18,19,20) or in the borings (6,7).