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 5998-01-365-2350
NSN 6610-01-459-8629
NSN 6650-01-327-7826
NSN 5935-00-470-1836
NSN 2925-00-486-8105
NSN 5965-01-059-4028
NSN 2925-00-795-4064
NSN 5915-00-528-9286
NSN 5935-00-467-4097
NSN 5950-00-825-3210
NSN 5960-00-578-8263
NSN 5855-00-631-4565