| abstract |
Disclosed is an elastomer composition comprising (A) 100 parts by weight of an ethylene · propylene-based copolymer rubber or a polyolefin-based thermoplastic elastomer, preferably a partially dynamic-crosslinked polyolefin-based thermoplastic elastomer; (B) 10 to 200 parts by weight of a polypropylene-based resin; (C) 10 to 200 parts by weight of a styrene-based thermoplastic elastomer; and (D) 100 to 400 parts by weight of a C 10 -, C 12 -, or C 12 /C 14 -derived poly ±-olefin plasticizer having a viscosity (according to JIS K2283) of 5 to 20 mm 2 /s at 100°C. The elastomer composition has low outgassing characteristics, low hardness, and excellent sealing properties at high temperature, and that can be suitably used, for example, as a material for molding a packing material of a hard disk drive cover-integrated gasket. |