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 6240-01-424-0746
NSN 5990-01-209-3955
NSN 6645-01-568-7517
NSN 5985-01-016-6928
NSN 5975-01-113-4367
NSN 6610-01-167-8747
NSN 6650-01-471-1881
NSN 6685-01-155-6563
NSN 6645-00-258-8547
NSN 5920-00-694-0483
NSN 5999-01-024-9547
NSN 2925-01-194-9737