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 6610-01-424-0283
NSN 6610-01-631-4355
NSN 6105-01-628-9110
NSN 5935-01-406-5720
NSN 5985-01-198-7738
NSN 4140-01-526-2917
NSN 5910-00-528-9714
NSN 6240-01-444-3508
NSN 6685-01-069-9177
NSN 5950-01-187-9421
NSN 5920-00-387-5312
NSN 6135-01-056-4609