... product: All kind of packing ring, lead nucleus.sealed, bearing,follower, worder water valve platen,machine tool dewa ... product: All kind of packing ring, lead nucleus.sealed, bearing,follower, worder water valve platen,machine tool deway, ... strengthMPa15≥Break elongation rate%150.Application Electricity insulate spares, sealed washer, antiseize substance, wire insulate protect set, ...