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 5975-01-492-6399
NSN 5945-01-376-7915
NSN 5925-01-092-6395
NSN 5935-01-483-7565
NSN 6135-01-522-3386
NSN 5920-01-263-5928
NSN 5945-01-099-6889
NSN 5915-01-115-2747
NSN 5855-01-062-5655
NSN 5999-01-519-3586
NSN 6130-01-250-2822
NSN 5950-00-597-3661