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 5999-01-423-0050
NSN 6145-00-195-8873
NSN 6240-01-246-4258
NSN 7035-00-631-3782
NSN 5905-01-398-3526
NSN 5996-01-093-9259
NSN 6150-00-155-3578
NSN 5996-00-447-8410
NSN 6685-01-398-7371
NSN 6130-01-331-6879
NSN 5975-01-634-0678
NSN 6645-00-068-3536