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 6135-01-226-4071
NSN 6220-00-117-4547
NSN 5960-01-076-4708
NSN 5996-00-278-5193
NSN 6135-01-417-6539
NSN 5985-01-523-5367
NSN 5990-01-474-3477
NSN 6610-00-672-6960
NSN 5975-00-224-9154
NSN 2925-01-583-5619
NSN 6145-01-289-2596
NSN 5925-01-026-5587