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 5835-01-328-6626
NSN 2925-01-327-3069
NSN 5945-01-352-5852
NSN 6110-01-278-9376
NSN 5965-00-074-1317
NSN 5975-01-386-4457
NSN 6150-01-089-6764
NSN 6620-01-454-8926
NSN 5998-01-379-9533
NSN 6145-00-726-0275
NSN 5905-00-498-2111
NSN 6650-01-218-4742