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 5996-00-231-9322
NSN 5998-01-606-9145
NSN 6150-01-370-6435
NSN 5999-01-393-7333
NSN 5915-00-805-3666
NSN 6645-01-196-8616
NSN 2925-01-256-8176
NSN 5998-00-316-3393
NSN 5998-00-263-4541
NSN 5945-00-385-3683
NSN 5975-01-102-1589
NSN 5910-01-252-7628