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 6220-00-472-8119
NSN 6650-01-538-8776
NSN 7035-00-252-7467
NSN 6685-00-991-1264
NSN 5999-00-888-9599
NSN 5965-01-187-0941
NSN 5895-01-099-4285
NSN 4140-01-342-4703
NSN 5935-01-464-9680
NSN 5999-01-412-9255
NSN 6645-00-237-8414
NSN 7035-01-388-6943