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 5935-01-431-5340
NSN 6145-01-174-0641
NSN 5950-00-851-6633
NSN 5985-00-082-1317
NSN 6130-01-046-0434
NSN 6685-01-419-7994
NSN 6620-00-197-5130
NSN 5998-01-266-4135
NSN 6610-00-912-3019
NSN 5975-01-502-7084
NSN 6135-01-540-9655
NSN 5999-01-400-0883