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 6685-01-100-3012
NSN 6145-01-508-0910
NSN 6130-00-299-0395
NSN 5895-01-237-4783
NSN 5965-00-153-5216
NSN 5910-01-328-8539
NSN 5945-00-087-6701
NSN 5895-01-424-7799
NSN 6650-00-088-4741
NSN 5950-00-881-6318
NSN 5920-00-891-2771
NSN 6135-01-343-7093