The air compressor cylinder and piston ring are performance and longevity. The materials used in the construction of these parts ensure they can withstand the rigors of regular use. This is for those looking to maintain their compressor's efficiency and lifespan. Features -Color:Khaki -Material:Rubber -Size:6.70X6.70X0.20cm/2.63X2.63X0.08in -Efficient air compression: the air compressor piston seal ensures highefficiency air compression for optimal performance -No Lubrication: no lubrication oil required, promoting a cleaner working environment - durability: features high wear resistance for extended reliability and service life -Multifunctional: suitable for a range of applications from factories to hospitals -User friendly replacement: simple to replace and easy to carry, facilitating quick maintenance Package list: 1 compressor air pump gasket