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 6145-01-322-5520
NSN 6150-01-271-0426
NSN 6240-01-659-0229
NSN 6220-01-255-0258
NSN 6220-01-200-2275
NSN 6130-01-424-0136
NSN 5855-01-318-7663
NSN 5910-01-073-6174
NSN 6150-00-507-2657
NSN 5960-00-195-4448
NSN 5935-01-179-7499
NSN 6610-00-597-5671