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 5905-00-253-4081
NSN 5905-00-434-2967
NSN 5996-01-208-5045
NSN 6110-01-529-8312
NSN 6685-00-137-7707
NSN 6610-00-279-8519
NSN 6620-01-094-3925
NSN 6620-01-337-9070
NSN 6610-01-455-0290
NSN 2925-01-372-9455
NSN 5915-01-005-0164
NSN 6110-00-185-8147