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 6240-00-755-6904
NSN 6320-01-440-8771
NSN 6150-01-200-8199
NSN 5910-01-174-1116
NSN 6150-01-464-7618
NSN 6685-01-359-2723
NSN 5895-01-116-2525
NSN 5935-01-429-8581
NSN 6620-01-573-5794
NSN 5998-01-175-1373
NSN 5930-01-337-0302
NSN 6650-01-225-4346