Patent ID: 8128097
Filing Date: 2012-03-06
Classification: F16J

Abstract:
1. A mechanical seal comprising: a mating ring as a sliding member fixed to a rotation axis; a cartilage fixed to a housing; a seal ring attached to said cartilage for sliding with respect to said mating ring, wherein said cartilage comprises: a bellows; and a coiled wave spring, wherein the bellows and the coiled wave spring are arranged in said inner peripheral portion of said cartilage, wherein said seal ring is pressed against said mating ring by the biasing force of said bellows and said coiled wave spring with an appropriate surface pressure, wherein said bending portion is formed on said back portion radially outside of said coiled wave spring and inwardly offset said outer peripheral portion, and wherein said bending portion is formed on a flat area of the back portion where no mechanical seal member is installed.