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 6135-01-386-5709
NSN 6620-01-550-6059
NSN 6130-01-588-2509
NSN 5998-01-382-1971
NSN 5915-01-496-4271
NSN 6240-01-445-8673
NSN 5990-00-465-4903
NSN 6240-01-600-1092
NSN 7035-01-604-0698
NSN 5996-01-565-7374
NSN 6105-00-210-0355
NSN 7035-00-476-7178