HYDRAULIC DAMPER ROD SEAL Russian patent published in 2012 - IPC F16J15/16 F16F9/14 

FIELD: machine building.

SUBSTANCE: proposed device comprises seal fitted in cover annular groove formed by one lateral and one face walls exposed toward damper piston. Annular groove face wall is furnished with conical chamfer. Seal is made up of annular stepped part made from thermoplastic polyester elastomer. Note here that larger step cylindrical surface has annular ledge to interact with face wall conical chamfer to add to tightness of butt joint. Note also that inner cylindrical surface is fitted on rod with negative clearance. Larger step end face chamber accommodates elastic bull ring extending beyond seal limits. Conical sealing edge end face is recessed into seal. Annular grooves are made on part of cylindrical surface to accommodate spot-proofing rings.

EFFECT: higher reliability, longer life.

4 cl, 2 dwg