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 5999-01-442-4524
NSN 5895-01-516-6785
NSN 6135-01-364-2738
NSN 6685-01-519-9250
NSN 4140-00-505-1684
NSN 6685-01-299-2250
NSN 5910-00-269-4755
NSN 2925-01-534-7314
NSN 5905-00-921-6884
NSN 5855-01-497-0467
NSN 6610-01-333-9543
NSN 5915-01-521-9486