EXCELLENT MATERIAL: High quality rubber fact resistant to wear, can be used for a long time, professional production in the after-sales factory, exquisite labor, stable performance sealing well ---- So that every time the oil enters from the rear of the motor oil filter housing, it avoids oil leaks. In addition to the oil, this joint helps to prevent other harmful substances from entering the valve train. Excellent function - ---- It can effectively prevent air and water leaks, prolong the life of the car and it is not easy to break. Brinda excellent useful life and reliability.