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 5935-01-066-4126
NSN 6620-01-633-8443
NSN 6130-01-394-6489
NSN 5895-00-583-1102
NSN 5925-00-523-2755
NSN 5999-00-964-5716
NSN 6685-01-113-8005
NSN 5975-00-189-0857
NSN 6320-01-631-7828
NSN 6220-01-586-9747
NSN 6150-01-422-1127
NSN 6220-01-302-8297