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 6105-01-649-6502
NSN 7035-01-341-6656
NSN 6685-01-649-1504
NSN 6610-00-155-1334
NSN 5930-01-178-6407
NSN 6320-00-004-9158
NSN 6610-01-539-9084
NSN 5950-01-360-2014
NSN 5960-01-523-9098
NSN 5965-01-100-2591
NSN 5950-01-579-4485
NSN 6620-00-494-5122