Nichias Corporation

Shuichiro Wada

Kazuo Nishimoto

Kanji Hanashima

Hitoshi Yamada

Hideshi Shibata

Kazuki Morimoto

Katsuya Kusuno

Masahito Tanemoto

Ichiro Kubo

A metal C-shaped ring gasket is constructed so that a satisfactory sealing property can be obtained even with a low clamping pressure. The metal C-shaped ring gasket is made of an austenite stainless steel and constructed so as to have a superficial roughness below 0.2 &mgr;m Ra and a superficial hardness below 230 Hv by electrolytic polishing.

Metal C-shaped ring gasket

The present invention provides a resin composition which can contain a large amount of a filler, has excellent moldability, can provide a molded product having both high electrical conductivity and mechanical strength, and is especially useful for a fuel cell separator and a sealing material. The resin composition comprises A) 100 parts by weight of a resin composed of 0 to 99 parts by weight of an epoxy resin and 1 to 100 parts by weight of a polyimide resin, with the proviso that the total amount of the epoxy resin and the polyimide resin is 100 parts by weight, and B) 40 to 900 parts by weight of at least one filler selected from the group consisting of graphite, ketjen black, acetylene black, furnace carbon black and thermal carbon black.

Resin composition

Growing community of inventors

Shizuoka, Japan

Shuichiro Wada