| 摘要 |
PROBLEM TO BE SOLVED: To provide a hard disk drive gasket having proper hardness by using a specific rubber composition. SOLUTION: This rubber composition for hard disk drive gaskets comprises (1) a fluororubber and (2) at least one kind of nonfluorinated rubber selected from a group comprising a natural rubber, a synthetic natural rubber, an ethylene-propylene rubber an ethylene-propylene-tertiary diene component rubber, butadiene-styrene rubber, a polybutadiene rubber, a halogenated butyl rubber, chloroprene rubber, isobutylene-isoprene rubber a butadiene-acrylonitrile rubber and its hydrogenated product chlorosulfonated polyethylene rubber, an acrylic rubber, an ethylene-acryl rubber, an epichlorohydrin rubber, epichlorohydrin- ethylene oxide rubber, polyuxethane rubber and silicone rubber.
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