CYLINDER-PLUNGER PAIR SEAL Russian patent published in 2012 - IPC F16J15/56 F04B53/02 

FIELD: machine building.

SUBSTANCE: proposed seal consists of split case with its parts coupled by coupling. Inside surface of every part of said split case is provided with thread wherein fitted are sealing elements to make production clearance there between. Said sealing element is made up of diaphragm with outer thread and annular groove wherein fitted is mating ledge elastic cartridge that makes an external member of splitted O-rings. Package of selecting elements 4 is clamped on its faces by main bushes. Hollow plunger is fitted in assembled seal hollow channel.

EFFECT: high-reliability seal.

2 dwg