| abstract |
(57) [Abstract] [Problem] Sealability, weather resistance, chemical resistance, creep resistance, Rubber composition for hermetic seal packing with excellent heat aging resistance and organic peroxide cross-linking efficiency. An object of the present invention is to provide an excellent rubber composition for a condenser-sealing seal. SOLUTION: The polyene comprises at least one norbornene compound having a terminal vinyl group represented by the following general formula [1] or [2]. A rubber composition for a seal packing, comprising a polyene amorphous copolymer (A): Wherein n is an integer of 0 to 10, R 1 is hydrogen or an alkyl group having 1 to 10 carbon atoms, and R 2 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms. 2] [Wherein, R 3 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms]. |