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 7035-01-012-2259
NSN 5915-01-458-3368
NSN 2925-01-030-6580
NSN 5835-01-514-5758
NSN 7035-01-260-0804
NSN 5925-01-102-2356
NSN 6110-01-140-0863
NSN 5950-01-197-8480
NSN 6135-00-735-8530
NSN 5895-01-252-5820
NSN 6685-01-578-4771
NSN 6610-00-854-5044