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 6240-01-179-4547
NSN 5996-01-236-4255
NSN 5905-00-224-5996
NSN 6110-01-388-2389
NSN 5855-01-384-7120
NSN 6650-00-152-2916
NSN 5910-01-254-9699
NSN 5960-00-936-3334
NSN 5925-01-245-8648
NSN 5990-00-206-3753
NSN 5905-01-130-4232
NSN 2925-01-604-8984