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 5960-00-536-1535
NSN 5998-01-113-8236
NSN 6145-01-112-0397
NSN 6145-01-613-4807
NSN 5855-00-560-0110
NSN 5835-01-463-2334
NSN 6150-01-517-2254
NSN 6150-01-296-4906
NSN 6145-01-282-3464
NSN 7035-01-222-0729
NSN 5925-01-156-4426
NSN 5915-00-303-4168