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 6610-01-140-9608
NSN 5996-01-560-4154
NSN 6610-01-193-2169
NSN 6620-00-082-1525
NSN 5960-00-466-3523
NSN 6135-01-322-4655
NSN 6135-00-246-0324
NSN 5895-01-597-6406
NSN 6240-01-307-2632
NSN 5999-01-087-1807
NSN 6220-00-794-7834
NSN 6620-00-358-7160