3.750 in. Dia
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 5950-01-066-2518
NSN 6650-01-497-1773
NSN 6220-01-061-7644
NSN 5945-01-524-6871
NSN 6110-01-225-5953
NSN 5999-00-729-1628
NSN 6150-01-567-0315
NSN 5905-01-659-2858
NSN 5975-01-444-1703
NSN 5935-01-627-1278
NSN 5905-00-865-2158
NSN 6110-01-347-0954