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 6650-01-633-9147
NSN 5925-01-152-7996
NSN 5975-00-855-5766
NSN 5985-00-223-9821
NSN 5920-01-397-5598
NSN 5950-01-603-9808
NSN 5920-00-057-5934
NSN 6685-00-540-8929
NSN 6650-01-623-2666
NSN 6620-00-701-3575
NSN 5915-01-052-6871
NSN 5945-00-155-4290