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 6610-01-064-5792
NSN 6130-01-016-7184
NSN 5998-01-329-4864
NSN 5905-01-607-5609
NSN 2925-00-580-4931
NSN 5930-01-480-7147
NSN 5920-01-603-7437
NSN 6220-01-168-9383
NSN 6240-01-593-4728
NSN 4140-01-068-0140
NSN 5996-01-266-2283
NSN 5945-01-176-8247