| 摘要 |
A high pressure sealing system is disposed between a housing and a reciprocating member. One version has a reciprocating plunger and in another version is a reciprocating piston associated with a free floating piston. In the one embodiment, the reciprocating plunger is directed through a housing that includes spaced spring biased seal assemblies each including a wedge member that is spring biased against a continuously circumferentially formed seal ring having an inner radial seal surface sealing the reciprocating plunger and an axial seal surface that in one case is sealed against the housing and in another case is sealed with respect to an intermediate seal carrier with a cavity defining a buffer space and which carries two static o-ring seal members for sealing against the housing and another seal ring that has an inside radial seal surface in engagement with the piston and an axial surface in sealing engagement with a cylinder; each seal ring a convoluted surface to prevent it from pinching between the relatively reciprocating member and housing. The piston in the other embodiment is further associated with a floating piston having an oil cavity on one side thereof and a gas chamber on the other side thereof and the floating piston carries a pair of spaced seal assemblies each including a spring biased wedge and a continuous annular seal ring of the type previously described that seals with respect to a seal support rib on the floating piston and a housing member that surrounds the floating piston.
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