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 6620-00-542-1579
NSN 2925-01-072-7101
NSN 5855-00-763-2155
NSN 5985-00-361-8863
NSN 5930-01-485-3309
NSN 6645-00-526-9476
NSN 5985-00-450-4662
NSN 5905-00-751-7742
NSN 6645-01-521-8525
NSN 6130-01-169-0934
NSN 5930-01-647-4866
NSN 5998-00-917-2051