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: Parts for spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil
NSN 5855-01-433-2220
NSN 5998-00-852-9183
NSN 5996-01-155-8924
NSN 5990-00-928-5655
NSN 5855-00-560-0110
NSN 5990-00-283-1324
NSN 5996-01-633-7979
NSN 2925-01-069-5324
NSN 5975-01-222-0594
NSN 6150-00-518-1402
NSN 5945-00-445-3683
NSN 6240-00-985-5244