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 6645-01-188-5237
NSN 6620-00-837-9484
NSN 5996-00-456-0895
NSN 5930-00-222-0982
NSN 4140-01-236-2175
NSN 6685-00-424-7557
NSN 6105-00-961-1668
NSN 6135-00-180-5125
NSN 6620-01-157-6954
NSN 5998-01-279-0637
NSN 5925-00-666-4753
NSN 6135-01-119-0720