A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 5935-01-179-4296
NSN 5975-01-442-4646
NSN 6145-00-738-5601
NSN 6220-01-188-0135
NSN 5935-01-272-0915
NSN 5905-00-584-8447
NSN 5975-01-220-1992
NSN 5895-01-565-5281
NSN 4140-00-922-5433
NSN 5999-00-702-3028
NSN 5999-00-811-9893
NSN 6105-01-376-7133