1High quality rubber embedded, better sealing effectiveness. 2It can be used in extreme conditions, maximum pressure 40 MPa, maximum working range of minus 25 degrees Celsius, to 100 degrees Celsius. 3Suitable for pipe connections, screw plugs, and pressure system of mechanical devices. 4Prevent water, oil, fuel, etc from leaking. 5It can prevent dust and impurities into inside the machine.