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 5895-01-283-6744
NSN 6220-01-514-2141
NSN 6320-01-512-2031
NSN 5835-01-595-1131
NSN 6240-01-050-9156
NSN 7035-00-405-3502
NSN 5935-00-142-7006
NSN 5960-00-597-2680
NSN 5835-01-647-6426
NSN 6685-00-898-0163
NSN 5910-01-327-7420
NSN 5975-01-224-8672