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 6145-01-125-0974
NSN 2925-00-918-0859
NSN 5998-00-795-2199
NSN 5945-01-091-4465
NSN 6320-00-300-5556
NSN 7035-01-196-3445
NSN 6610-01-382-7894
NSN 5965-00-448-9923
NSN 6320-00-186-6452
NSN 6650-00-754-2276
NSN 6220-00-547-8944
NSN 6240-00-922-1021