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 6650-01-380-6662
NSN 5990-00-711-9890
NSN 6110-01-075-1802
NSN 5930-00-343-6755
NSN 5915-01-305-2194
NSN 6145-00-887-6395
NSN 6135-01-440-9412
NSN 6650-00-279-5741
NSN 5965-00-458-7321
NSN 5998-01-234-9372
NSN 6150-01-432-0709
NSN 5996-00-275-1651