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 6110-01-625-6770
NSN 2925-01-394-5650
NSN 5965-00-689-1545
NSN 5945-00-977-7628
NSN 5915-01-555-8852
NSN 5985-01-143-1694
NSN 5920-01-186-6335
NSN 6685-01-010-3234
NSN 5930-01-338-3757
NSN 6220-01-378-7467
NSN 6645-01-334-0782
NSN 6150-00-701-7880