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 6135-01-459-1239
NSN 5965-00-615-7118
NSN 6110-00-157-1699
NSN 6220-01-478-9285
NSN 6145-00-504-5221
NSN 5930-01-495-1925
NSN 2925-01-618-5706
NSN 5920-00-942-9806
NSN 6320-00-432-2772
NSN 6130-01-472-2411
NSN 5910-01-301-1592
NSN 5920-01-414-6983