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 6620-00-752-8777
NSN 5990-00-136-4182
NSN 6130-01-298-2948
NSN 6320-01-236-9562
NSN 7035-00-529-3128
NSN 6105-01-476-0531
NSN 5945-01-578-0924
NSN 6645-01-041-3533
NSN 5996-00-226-5364
NSN 5920-01-121-8022
NSN 5975-01-536-2385
NSN 6645-01-122-2318