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 5975-00-988-3493
NSN 6135-01-069-2482
NSN 6645-00-274-5670
NSN 5990-00-226-7894
NSN 6650-00-283-0978
NSN 5895-00-907-2788
NSN 5905-00-241-8927
NSN 5975-01-388-0577
NSN 5915-01-519-6675
NSN 5915-01-548-7679
NSN 5835-01-286-6499
NSN 4140-01-138-4889