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 5960-01-415-3574
NSN 6105-00-258-2157
NSN 5985-01-594-2314
NSN 6240-01-272-5893
NSN 6220-00-804-3598
NSN 5985-01-551-9897
NSN 5905-01-099-9496
NSN 6130-00-801-5359
NSN 6130-01-370-2004
NSN 5855-00-446-5921
NSN 6610-00-074-0666
NSN 5925-01-468-4604