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 5999-01-417-3028
NSN 6610-01-176-3539
NSN 5910-01-069-4746
NSN 6645-01-142-2416
NSN 5990-01-473-4314
NSN 6130-01-268-2119
NSN 4140-00-542-4611
NSN 5990-01-144-6994
NSN 5960-01-258-0814
NSN 5835-00-762-9675
NSN 2925-01-525-8212
NSN 5998-00-455-9905