Seal ring and seal device

Details Seal ring and seal device Seal ring and seal device

2005-04-26

2005-04-26

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C522S150000, C522S155000, C522S111000, C522S112000, C524S440000, C524S544000, C524S545000, C524S546000, C524S439000, C524S551000, C264S330000, C264S331110, C264S331140

Reexamination Certificate

active

06884827

ABSTRACT:
A seal ring seals operating oil hermetically and is attached to an annular seal ring groove provided on an outer circumference of a shaft member. The seal ring comprises fluororesin, metal powder having a hardness equal to or more than that of any of a side surface of the seal ring groove serving as a sliding partner and an inner circumferential surface of a housing engaged relatively rotatable with the outer circumference of the shaft member, and modified fluororesin formed by irradiating an ionizing radiation in a range from 1 kGy to 10 MGy inclusive in a state of being heated up to a melting point thereof or higher under an inert gas atmosphere with an oxygen partial pressure of 1.33 kPa or less.

REFERENCES:
patent: 5428096 (1995-06-01), Fukunaga
patent: 6552099 (2003-04-01), Yamamoto et al.

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