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 5905-00-661-0531
NSN 6645-01-364-2992
NSN 6135-01-238-2878
NSN 6650-01-493-6638
NSN 5930-01-054-4128
NSN 5935-01-551-7219
NSN 5965-01-611-6085
NSN 6110-01-479-3893
NSN 5990-00-103-0528
NSN 5925-00-461-1512
NSN 6150-01-503-1236
NSN 6240-00-306-9214