Rider ring 1903396608 Replacement

Rider ring 1903396608 Replacement is a piston ring made to fit the Chicago Pneumatic HX2T 75-100 compressor. It seals the gap between the piston and the cylinder wall. The number is also written 1903 3966 08. It appears in the LP Cylinder Assembly parts list. Enquire with PFC for the lead time on this piston ring.