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 5910-01-037-4212
NSN 6130-00-823-8481
NSN 5960-00-871-3950
NSN 6130-01-374-6217
NSN 6150-00-284-9133
NSN 6135-01-615-0812
NSN 6320-01-328-6575
NSN 6685-01-150-3252
NSN 6610-01-166-4860
NSN 5985-01-023-8011
NSN 5925-00-387-3956
NSN 6645-00-070-6358