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 5905-00-781-6701
NSN 5998-01-145-7369
NSN 6130-01-013-5538
NSN 5925-01-084-3165
NSN 6650-01-579-3855
NSN 6240-00-771-2263
NSN 5975-01-392-6126
NSN 6645-00-847-3727
NSN 6685-01-295-3256
NSN 4140-00-266-9132
NSN 5998-01-281-2084
NSN 6130-00-288-1886