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 7035-01-227-2546
NSN 5950-01-083-7083
NSN 6610-01-149-0720
NSN 5925-01-211-6551
NSN 6110-01-376-7253
NSN 6130-00-086-2908
NSN 5920-01-109-6661
NSN 6685-01-211-6590
NSN 6320-00-004-9158
NSN 5920-01-320-2494
NSN 5985-01-485-7881
NSN 6645-01-582-6688