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 6240-01-397-6336
NSN 2925-01-457-5649
NSN 5998-01-200-8303
NSN 5925-00-952-0618
NSN 6620-00-401-8489
NSN 6645-00-580-9605
NSN 5975-01-350-8709
NSN 6220-01-171-0957
NSN 5920-01-197-2570
NSN 5935-01-090-0364
NSN 6650-01-164-7651
NSN 6650-00-816-0517