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 5945-01-512-9376
NSN 6130-01-550-9756
NSN 7035-01-567-8088
NSN 5950-00-266-2511
NSN 6110-00-862-3097
NSN 5930-00-126-7382
NSN 6645-01-143-7838
NSN 5930-01-501-5611
NSN 5920-01-046-5235
NSN 4140-01-657-1239
NSN 5999-01-469-6142
NSN 6135-00-043-0021