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 6610-00-459-9607
NSN 5985-01-368-2667
NSN 6240-01-154-4219
NSN 6620-01-052-1705
NSN 5925-01-229-6924
NSN 2925-01-024-2662
NSN 5905-00-647-4554
NSN 6685-00-212-4531
NSN 6650-01-576-8520
NSN 6110-01-263-6499
NSN 5920-00-808-0037
NSN 5920-01-588-8510