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 7035-01-202-8172
NSN 5996-00-288-1829
NSN 5925-01-347-0358
NSN 6620-01-242-9247
NSN 6150-01-552-4528
NSN 6110-00-553-1853
NSN 5910-01-582-4631
NSN 5996-00-553-7348
NSN 6645-01-497-6543
NSN 5996-01-462-3656
NSN 6685-00-712-9616
NSN 6610-01-341-1598