O-rings, o ring cord, rubber rope,backups, quad rings, square rings, o-cord, square cord,,etc. for NBR, VITON, SILICON,,,,ETC ... Viton O-RING CORD, viton RUBBER ROPE,viton rubbe ... , Toluene : excellent , Fuel C : excellent ,Gasoline : very good ,Water < 100°C : very goodHydraulic sealing items.backups , dowty seals, u seals ...