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 5930-01-606-4619
NSN 6645-01-259-7142
NSN 6650-00-499-7446
NSN 5965-01-092-4860
NSN 6150-01-046-7696
NSN 2925-01-380-0869
NSN 6240-01-528-7873
NSN 5960-00-222-7772
NSN 6240-01-020-9910
NSN 6610-00-508-1728
NSN 5920-01-350-4426
NSN 5930-01-508-4393