Dock bumpers of rubber; Door stops of rubber; Electrical insulating materials; Electrical insulating rubber products; Ethylene propylene rubber; Gasket sealer for use in plumbing; Insulating felt for use in doors; Insulating materials; Natural rubber; Nitrile rubber; Rubber bars and rods; Rubber chips or granules for use as a playground ground cover; Silicone rubber; Styrene-butadiene rubber; Window stops of rubber