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 5999-00-900-4778
NSN 6610-01-399-7613
NSN 6105-01-417-6277
NSN 5835-00-876-4544
NSN 6685-01-276-8200
NSN 5960-01-544-1273
NSN 5905-00-227-0117
NSN 5990-00-768-9341
NSN 5998-01-054-4161
NSN 6240-00-138-9124
NSN 6220-01-093-0928
NSN 6320-01-539-3156