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 5960-01-487-6436
NSN 2925-01-510-2221
NSN 6685-01-106-3210
NSN 5920-01-058-3964
NSN 5855-00-228-8446
NSN 5998-01-083-2251
NSN 5945-01-364-1178
NSN 6320-01-157-9076
NSN 5905-00-468-3059
NSN 7035-01-220-6392
NSN 5925-01-423-7429
NSN 6105-01-411-5970