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 5935-01-281-7397
NSN 6130-01-556-6940
NSN 5935-01-062-0705
NSN 6645-00-456-2923
NSN 5930-01-554-9405
NSN 6650-00-503-7950
NSN 5950-01-487-0377
NSN 2925-01-463-8856
NSN 6685-00-816-5660
NSN 6240-01-509-7416
NSN 5855-01-528-8776
NSN 6650-01-210-5090