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 5915-01-442-6050
NSN 6110-01-099-6893
NSN 5975-01-640-9249
NSN 5945-01-343-9283
NSN 6150-01-100-3413
NSN 5996-00-618-5920
NSN 5985-00-247-6308
NSN 5999-01-273-0712
NSN 5905-01-447-3781
NSN 6110-00-105-6255
NSN 2925-01-190-9352
NSN 5895-00-305-7549