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 steam turbines
NSN 5925-01-384-2131
NSN 6220-00-554-5937
NSN 6110-00-481-7022
NSN 2925-00-839-6815
NSN 5985-01-142-1773
NSN 5915-00-834-3766
NSN 6620-01-534-2370
NSN 6645-01-321-7665
NSN 6320-00-300-5556
NSN 5975-01-634-0678
NSN 6685-01-058-1699
NSN 5905-01-630-9213