... .6 micrometerRoughness concentration: 0.25 micrometerLife span: 500 thousand timesApplication: wash basin, bathtub, kitchenroom,etc.brass faucet cartridge ( valve core )1) Application ... through the normal operation of 300 000 tunes leaks. Application: wash basin, bathtub, kitchenroom,etc. brass faucet valve spool ceramic valve cartridge ...