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 5935-00-089-8060
NSN 5985-01-499-2005
NSN 4140-01-034-4185
NSN 5965-01-406-4164
NSN 6150-00-111-6774
NSN 2925-01-076-6128
NSN 6645-01-508-9074
NSN 5990-01-102-5699
NSN 5855-00-149-0766
NSN 5996-01-632-0851
NSN 5960-00-617-6280
NSN 5945-00-730-4838