Patent ID: 8800974

Claim:
An air spring sleeve comprising an outer layer, an inner layer, and at least one reinforcing layer, where the outer layer, inner layer, and at least one reinforcing layer are identical compositions, where the identical compositions include the cured residue of at least two members of the group consisting of polyisoprene rubber, natural rubber, styrene/butadiene rubber, polybutadiene, polybutadiene rubber, neoprene, ethylene/propylene rubber, ethylene/propylene/diene rubber, acrylonitrile/butadiene rubber, silicone rubber, fluoroelastomer, ethyleneacrylic rubber, ethylene vinyl acetate copolymer, chlorinated polyethylene rubber, chlorosulfonated polyethylene rubber, hydrogenated nitrile rubber, and tetrafluoroethylene/propylene rubber, and where the identical compositions do not include epichlorohydrin where the identical compositions are cured with from about 1.5 to about 3.5 parts by weight sulfur vulcanizing agent, per hundred parts rubber.