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 6650-00-527-7451
NSN 6110-01-358-7476
NSN 5960-01-128-7784
NSN 6135-00-883-9024
NSN 5930-00-508-4811
NSN 5930-00-141-9957
NSN 6320-01-538-6737
NSN 6105-01-180-2807
NSN 5965-00-076-9561
NSN 5895-00-596-8678
NSN 5985-00-042-5536
NSN 5905-01-415-4187