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 5915-01-617-2540
NSN 6150-00-659-7123
NSN 5905-01-574-1648
NSN 5999-00-211-0131
NSN 5950-00-420-9390
NSN 5935-01-265-4681
NSN 5915-00-162-1841
NSN 5998-01-555-8650
NSN 6105-01-604-0856
NSN 6135-01-210-8715
NSN 6685-01-640-7240
NSN 6135-01-419-0779