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 5930-01-445-3263
NSN 5965-00-243-9496
NSN 5998-00-436-7932
NSN 6110-00-977-8534
NSN 6150-00-216-6542
NSN 5965-01-222-0166
NSN 5965-00-267-4173
NSN 7035-00-252-7467
NSN 5965-00-493-6008
NSN 7035-01-353-6861
NSN 5950-01-019-1285
NSN 5915-01-463-8413