Patent ID: 8071680

Claim:
A method for producing an elastomeric sealing article, comprising: preparing a thermoplastic elastomeric resin composition, wherein the thermoplastic elastomeric resin composition comprises: (a) 100 parts by weight of a hydrogenated block copolymer comprising: at least two polymeric blocks (A) composed of styrene, and at least one polymeric block (B) composed of isoprene, wherein the block copolymer is composed of 20 to 50% by weight of the polymeric blocks (A) and 80 to 50% by weight of the polymeric block (B), (b) 70 to 130 parts by weight of an ethylene-octene copolymer comprising ethylene in an amount of more than 50% by weight, wherein component (b) is one which has been prepared using a single site catalyst, and (c) 30 to 60 parts by weight of polypropylene, provided that said thermoplastic elastomeric resin composition does not contain a non-aromatic softening agent; and molding said thermoplastic elastomeric resin composition into said elastomeric sealing article, provided that none of said components (a), (b), and (c) is cross-linked and the method does not have a step of cross-linking.