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 6130-01-503-0881
NSN 5935-00-156-6027
NSN 6645-00-650-3405
NSN 7035-01-227-2546
NSN 6320-00-456-2092
NSN 5835-01-178-4154
NSN 5985-01-524-3898
NSN 6685-00-675-6696
NSN 5990-01-386-5561
NSN 5975-00-539-7300
NSN 6320-00-024-1004
NSN 6685-01-270-6312