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 5930-01-050-7500
NSN 5975-01-378-4289
NSN 5915-01-364-1971
NSN 6220-01-556-0074
NSN 6220-01-024-9444
NSN 5965-01-365-1678
NSN 5998-00-054-4868
NSN 5920-01-069-9833
NSN 2925-01-554-5246
NSN 6645-01-365-0978
NSN 5935-01-503-1544
NSN 6650-01-531-6738