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 6685-00-432-8795
NSN 5935-01-100-1171
NSN 5996-01-179-9951
NSN 5905-00-126-4697
NSN 5998-01-421-5445
NSN 5945-01-122-4199
NSN 6650-00-796-9972
NSN 5905-00-157-2197
NSN 5905-01-316-6253
NSN 5935-01-286-9341
NSN 4140-01-023-1537
NSN 6150-00-868-7953