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 6685-01-536-0206
NSN 6650-01-330-6740
NSN 5935-01-391-4980
NSN 6135-01-039-2882
NSN 7035-01-145-5059
NSN 5930-01-177-9942
NSN 6645-01-265-2746
NSN 5855-00-560-0110
NSN 5999-01-231-6512
NSN 6650-01-302-4451
NSN 6610-01-257-5808
NSN 6135-00-309-0074