The E8 type pneumatic piston rod seal/dust ring for the cylinder piston rod has three functions: sealing, dustproof and fixing. The unique two-piece design and selection of special materials provide the following benefits: • Will not corrode, forgoes the use of unnecessary additional ring clamps due to the locating/wiper ring. • No dust corners are created due to the special design of the dust ring. • If only one wiper ring is required, the front seal can be omitted. And there is no need to modify the grooves. • Due to the special high wear-resistant plastic material and unique design, the E8 has lower friction and longer life. • Long service life even in dry and oil-free air after initial assembly lubrication.