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 6145-01-369-0268
NSN 5998-01-182-1465
NSN 5930-01-191-9191
NSN 5975-01-447-2771
NSN 5935-00-644-9978
NSN 5855-01-020-7982
NSN 5855-00-149-0766
NSN 5950-01-502-7019
NSN 6150-01-242-9898
NSN 5905-00-934-8857
NSN 4140-01-273-0196
NSN 6150-01-382-8440