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 5855-00-896-4047
NSN 5855-00-245-8461
NSN 5985-01-412-6641
NSN 6620-01-502-9104
NSN 6620-00-270-3275
NSN 6620-00-369-1916
NSN 6130-01-058-2642
NSN 6135-01-066-3469
NSN 5990-01-544-4360
NSN 5960-01-328-1533
NSN 6150-01-349-7551
NSN 5998-00-512-9151