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 5905-00-898-4289
NSN 5895-00-626-3772
NSN 6650-00-578-6543
NSN 6645-01-063-8243
NSN 5855-00-494-9581
NSN 6135-01-032-8887
NSN 6685-01-383-1919
NSN 6240-01-231-3610
NSN 6685-01-393-4381
NSN 5935-01-353-9178
NSN 5910-00-113-0310
NSN 6650-01-246-8262