Seal in pump piston intermittently permitting conduction of pump
Sealed articulated piston
Sealing arrangement on a piston-cylinder unit
Sealing system for a compressor
Self-lubricating piston for pharmaceutical container
Self-lubricating, fluid-actuated, percussive down-the-hole drill
Single acting reciprocating pump piston
Sliding members and piston for internal combustion engine
Sliding structure for a reciprocating internal combustion...
Spherical joint connecting rod holder rings
Surface pit forming method and member with surface pit
Swash plate for compressor
Swash plate type refrigerant compressor
Swash-plate compressor having a thrust race with a radial flange