Patent ID: 7029013

Claim:
A seal member to be interposed between an opening end portion of a substrate storage container and a cover, said container comprising a container body which includes said opening end portion on a front side thereof and which stores a substrate and said cover, said cover being provided with a fitting groove formed on an inner surface thereof; said seal member comprising a base body section formed of a rigid thermoplastic resin material and a covering section formed of a flexible thermoplastic elastomer material; said base body section including an engaging protrusion adapted to be fitted in said fitting groove of said cover; said covering section being fixed to an inner periphery side surface of said base body section to cover said engaging protrusion of said base body section; and said covering section including a seal forming portion adapted to contact said opening end portion of said container body to form a seal, said seal forming portion being formed to become gradually thinner toward a tip end thereof and to extend obliquely.