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 6145-00-681-1585
NSN 6135-00-880-1026
NSN 5950-01-556-7010
NSN 7035-01-158-7673
NSN 6130-01-371-2960
NSN 6685-00-929-6093
NSN 6105-01-370-9639
NSN 6240-00-089-4007
NSN 5925-01-136-3606
NSN 5935-01-626-4095
NSN 6135-01-150-6916
NSN 6320-00-931-4855