Patent ID: 6889984

Claim:
A gasket for a disk apparatus comprising a molded product not containing a siloxane component and containing a hydrocarbon-based organic elastic material and a fluorine-based resin having a vapor pressure of 1.3×10 −8 Pa to 1.3 kPa at 100° C., wherein the fluorine-based resin segregates on the surface of the hydrocarbon-based organic elastic material, and is at least one material selected from the group consisting of hydroxyl group-containing polyfluoroalkyl (HO—FC), hydroxyl group-containing polyfluoroether (HO—FCO), nonfunctional group polyfluoroether (FCO), nonfunctional group polyfluoroalkyl (FC), carboxyl group-containing polyfluoroether (HOOC—FCO), mercapto group-containing polyfluoroalkyl (HS—FC), epoxy group-containing polyfluoroalkyl (EPOX—FC), and C n F 2n+1 —(CH 2 OCH 2 CHCH 2 O).