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 6135-00-235-1938
NSN 6105-01-634-0322
NSN 6685-01-158-0975
NSN 5895-00-914-6636
NSN 7035-00-476-7178
NSN 6620-01-106-3553
NSN 5950-01-028-1748
NSN 6145-01-578-8782
NSN 5960-01-580-5218
NSN 4140-01-267-5137
NSN 5925-00-829-0197
NSN 5985-01-422-1552