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 5975-00-994-6806
NSN 2925-01-406-7837
NSN 5950-00-275-2842
NSN 5855-01-489-5808
NSN 5999-00-228-8582
NSN 5950-01-102-9774
NSN 6685-01-450-8630
NSN 6320-00-242-3300
NSN 5965-01-275-9246
NSN 5985-00-861-1757
NSN 5930-01-170-4205
NSN 5905-00-813-3472