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 5910-01-244-8906
NSN 5998-00-003-3651
NSN 6685-01-345-9747
NSN 6610-00-186-9180
NSN 6150-00-886-6638
NSN 5996-01-440-9660
NSN 5996-00-445-3981
NSN 5999-01-619-0030
NSN 6130-01-153-8735
NSN 6220-01-583-8696
NSN 4140-01-272-6060
NSN 7035-00-870-0290