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 5975-01-415-5771
NSN 6105-00-111-0355
NSN 6150-01-228-2847
NSN 6610-00-788-0134
NSN 6685-01-123-9275
NSN 5975-00-971-4897
NSN 5905-00-263-3453
NSN 6320-01-352-8084
NSN 6685-01-323-7840
NSN 5925-00-023-4154
NSN 5930-01-163-1439
NSN 6105-00-217-0993