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 5950-01-575-6696
NSN 6610-00-202-5481
NSN 4140-00-379-4748
NSN 6130-01-185-4956
NSN 6685-00-592-4713
NSN 5935-01-472-9732
NSN 7035-01-629-4362
NSN 5905-01-448-1369
NSN 6685-01-176-9454
NSN 6130-00-735-2458
NSN 6610-01-464-3037
NSN 6135-01-379-6928