1. The appearance details are in place, and the high-temperature resistant thickened rubber ring
2. The imported filter paper with high proportion of synthetic fiber is selected, which can withstand high temperature up to 150 ℃, adapt to the high-temperature working environment of the engine, and is not easy to be damaged or aged. Extended service life and complete check valve
3. Good compression resistance, not easy to leak oil
4. Full automatic dry leak detector realizes 100% full inspection of sealing performance