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 5925-01-085-6444
NSN 5996-00-358-6257
NSN 5975-00-441-5462
NSN 6685-01-100-3012
NSN 6645-01-171-9619
NSN 5855-00-014-5008
NSN 6135-01-610-2098
NSN 6150-01-158-3280
NSN 6620-01-569-4621
NSN 6130-00-867-1431
NSN 5990-00-337-5359
NSN 5945-00-448-9573