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 5975-01-154-9194
NSN 5975-01-108-5461
NSN 5960-01-471-4263
NSN 5960-00-483-0161
NSN 6645-01-322-5644
NSN 6240-01-508-0456
NSN 6105-01-648-2644
NSN 6145-01-448-2949
NSN 5910-01-107-2832
NSN 6320-00-456-0836
NSN 5975-01-565-9476
NSN 6320-01-585-8468