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 6645-00-274-5670
NSN 6105-01-478-6400
NSN 4140-00-116-1022
NSN 4140-00-555-3856
NSN 6150-00-935-5239
NSN 5975-01-317-3265
NSN 5895-00-705-5876
NSN 6650-01-271-4893
NSN 6645-01-408-6568
NSN 6610-01-545-2844
NSN 6650-00-177-0983
NSN 5920-00-438-4973