ULTRA-HIGH-PRESSURE SEALING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To maintain a sufficient sealing effect to the multiple number of reciprocation of a piston by forming a cylindrical seal of multiple layered ring-like members.

SOLUTION: A high-pressure sealing structure of this invention comprises a cylindrical seal presser 5 and a cylindrical seal 2 serially arranged between a piston rod 4 and a cylinder hole 1A of a cylinder 1. The cylindrical seal 2 made of a resin is structured by laminating multiple ring-like members 10, 11, 12 and 13 having a different cross sectional shape in the axial direction.

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