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 6320-01-578-6006
NSN 5895-00-816-9763
NSN 6620-01-603-0852
NSN 4140-01-657-6565
NSN 5950-01-281-1758
NSN 5855-01-479-3152
NSN 6610-00-081-2365
NSN 4140-00-146-3269
NSN 2925-00-233-5644
NSN 6645-01-622-1830
NSN 5915-00-473-2112
NSN 5985-00-136-4348