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 5930-01-093-6699
NSN 6135-01-498-7945
NSN 5925-00-969-8337
NSN 6150-01-219-9835
NSN 5965-01-148-3396
NSN 6645-01-470-6838
NSN 6645-00-200-2324
NSN 5965-01-100-2591
NSN 5960-01-472-5263
NSN 6130-00-553-8758
NSN 6240-01-644-9907
NSN 6240-00-423-9575