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 6240-00-271-5995
NSN 5895-01-551-4126
NSN 6645-01-036-1182
NSN 5998-01-250-3238
NSN 5965-01-179-3174
NSN 6240-01-528-5370
NSN 5835-00-754-7255
NSN 5915-00-142-6912
NSN 2925-01-317-1186
NSN 7035-01-318-6578
NSN 6130-00-222-7722
NSN 5998-01-437-5967