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 5835-01-092-6759
NSN 5935-01-497-3844
NSN 4140-00-946-6478
NSN 6610-01-177-5033
NSN 6320-00-882-7061
NSN 5945-00-187-2822
NSN 6220-01-284-6285
NSN 6130-01-081-0377
NSN 5965-00-888-2643
NSN 5950-00-916-7971
NSN 5975-01-391-9998
NSN 5985-00-360-6529