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 5930-01-393-5033
NSN 5999-01-148-1906
NSN 5910-00-848-2693
NSN 6650-00-217-6292
NSN 5905-01-394-3728
NSN 6320-01-592-6248
NSN 6105-01-367-2269
NSN 6240-01-502-7883
NSN 5960-01-210-0879
NSN 5950-00-722-1451
NSN 6105-01-594-2251
NSN 5998-00-288-5533