These leakproof air compressor parts are engineered to maintain a secure seal, reducing the risk of oil contamination. The gaskets are made from plastic materials, ensuring stable performance. suitable for replacement or upgrade, they help maintain the functionality of your air compressor system. Features -Color:Black -Material:Plastic -Size:8.00X8.00X1.20cm/3.14X3.14X0.47in -Size:7.20X7.20X1.20cm/2.83X2.83X0.47in -Oil blocking: effectively blocks oil to prevent leaks, ensuring the smooth and stable performance of your air compressor -High durability: constructed from wear resistant materials that prolong the service life and minimize replacement frequency -suitable compatibility: accurately sized to fit a wide range of air compressor models, simplifying the installation process -High temperature endurance: designed to perform in extreme temperatures, promoting smooth operation in demanding environments -Low friction: features a low friction design that reduce consumption, boosting the overall efficiency of your air compressor system Package list: 2 x Air Compressor Pump Rings (80mm) 2 x Air Compressor Pump Rings (72mm)