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 5855-01-125-4768
NSN 6240-01-384-3887
NSN 6145-00-278-0697
NSN 6145-01-175-3867
NSN 5905-01-618-8491
NSN 6130-01-369-3253
NSN 6685-01-355-9322
NSN 5905-00-280-0591
NSN 5855-01-085-5354
NSN 6240-01-548-1662
NSN 4140-00-592-3318
NSN 2925-00-149-0760