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 5965-01-484-1248
NSN 5945-00-144-8073
NSN 6645-01-063-8243
NSN 6135-00-877-1659
NSN 6135-01-526-6530
NSN 5965-01-536-6730
NSN 5945-01-199-0269
NSN 6320-00-270-8222
NSN 5925-00-492-2318
NSN 5950-01-307-9269
NSN 5998-00-412-2730
NSN 5855-00-337-3679