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 5915-01-021-3461
NSN 6105-01-230-1495
NSN 6220-01-118-0753
NSN 6685-01-301-7318
NSN 6610-01-212-9817
NSN 5996-01-544-7773
NSN 5835-00-695-9543
NSN 6645-01-649-5069
NSN 4140-00-173-0706
NSN 5895-01-225-2698
NSN 5965-00-458-7321
NSN 5960-01-104-3426