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 5990-01-421-3325
NSN 6610-00-170-6715
NSN 5960-00-233-5488
NSN 5895-01-207-5038
NSN 5990-01-218-5160
NSN 5835-00-233-6327
NSN 5910-01-230-0713
NSN 5965-01-215-0993
NSN 2925-01-223-9593
NSN 6645-01-140-8204
NSN 5915-01-425-2981
NSN 5905-01-370-4989