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 4140-01-367-0791
NSN 6110-01-020-8153
NSN 6240-00-548-3992
NSN 6130-01-389-8417
NSN 5998-01-155-6989
NSN 5915-00-949-2548
NSN 5960-00-758-4563
NSN 6620-00-918-3878
NSN 6685-01-541-9538
NSN 5975-01-560-3456
NSN 7035-01-276-9016
NSN 5998-01-046-1929