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 5985-00-891-3713
NSN 6650-01-473-7723
NSN 6240-01-257-9004
NSN 6135-01-226-4071
NSN 5998-00-222-7755
NSN 6610-01-112-0447
NSN 5910-00-428-4017
NSN 6135-00-221-4720
NSN 7035-01-627-5909
NSN 5935-00-007-6008
NSN 6220-00-788-0157
NSN 6685-00-628-7342