A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5895-00-972-7322
NSN 5925-01-129-4135
NSN 6650-00-197-7563
NSN 5975-00-472-7778
NSN 6110-01-390-3302
NSN 6135-01-247-5660
NSN 5985-01-456-2042
NSN 2925-01-446-6523
NSN 5985-01-253-6851
NSN 6240-01-308-1848
NSN 6220-01-541-2851
NSN 6240-01-423-1335