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 5930-00-205-2945
NSN 2925-00-167-6762
NSN 6650-01-028-9791
NSN 6620-00-877-3266
NSN 5855-01-092-7755
NSN 5920-00-117-8280
NSN 5910-00-228-7425
NSN 5910-00-929-5905
NSN 6685-00-610-1882
NSN 6145-00-397-5950
NSN 5985-00-217-1624
NSN 5905-01-032-4571