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 5925-00-816-6658
NSN 5855-01-328-7434
NSN 6610-01-545-5648
NSN 5996-01-535-6443
NSN 4140-01-155-5620
NSN 5905-01-033-6581
NSN 5960-01-142-8170
NSN 5945-00-121-5906
NSN 6135-01-265-1384
NSN 5915-01-612-1871
NSN 5945-01-501-5483
NSN 5945-00-824-1159