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 6685-01-557-4224
NSN 6110-00-257-5199
NSN 4140-00-888-9836
NSN 5905-00-250-9698
NSN 5910-01-433-0142
NSN 6220-00-269-4556
NSN 6320-01-244-9268
NSN 5990-00-232-3965
NSN 4140-01-275-5234
NSN 4140-00-454-3786
NSN 6145-00-836-5654
NSN 5895-01-063-6938