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 5950-00-570-0352
NSN 5999-01-277-2055
NSN 5910-01-101-7545
NSN 5915-00-939-8864
NSN 6320-01-366-5157
NSN 6220-00-004-1744
NSN 6150-00-904-1402
NSN 6645-01-119-3496
NSN 5855-00-288-1408
NSN 6240-01-090-7263
NSN 5960-01-297-5855
NSN 6130-01-273-1973