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 6240-01-048-2769
NSN 5999-00-206-7317
NSN 6135-01-052-9634
NSN 5990-01-266-6016
NSN 5985-01-218-0589
NSN 5935-00-527-3826
NSN 6220-01-507-1537
NSN 5925-00-005-3694
NSN 6620-01-646-0105
NSN 5930-01-518-3697
NSN 7035-01-479-5268
NSN 5935-00-798-5300