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 5975-01-531-5708
NSN 5915-01-348-7721
NSN 6110-01-493-3688
NSN 6645-01-529-2474
NSN 6145-01-268-6992
NSN 5930-01-107-2325
NSN 6110-01-134-4103
NSN 6320-01-495-1244
NSN 2925-00-258-9786
NSN 5950-01-231-8892
NSN 6145-00-510-7319
NSN 5910-00-581-9843