competitive price high quality good after-sale service Valve ceramic Seal We offer various of ceramic discs, used in many kinds of faucets. Material: 95 ... times is 300, 000 to 500, 000, the density is3.6~3.7g/cubic centimeter, the rigidity is 84~86 HRA, the ... , meanwhile, we can manufacture according to customs' drawings or samples. High quality faucet Valve ceramic Seal (JDS-046)