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 5975-01-523-6600
NSN 5998-01-584-1590
NSN 5930-01-444-8193
NSN 6150-01-651-3613
NSN 5930-00-205-0136
NSN 7035-00-703-3535
NSN 6135-01-501-5376
NSN 6110-01-586-8161
NSN 6130-01-521-1656
NSN 6320-00-790-4844
NSN 6610-00-406-8544
NSN 5915-01-100-3241