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 6320-01-578-6006
NSN 6685-01-067-0120
NSN 7035-01-295-1609
NSN 6220-01-323-7897
NSN 6130-00-421-3676
NSN 6220-00-274-8541
NSN 6685-00-172-9764
NSN 5960-00-009-2771
NSN 7035-01-364-8454
NSN 5910-00-563-6928
NSN 6135-01-164-3561
NSN 6610-01-327-3187