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 5965-00-243-1243
NSN 5999-00-253-2192
NSN 6610-00-580-5997
NSN 6130-01-509-0766
NSN 5925-00-876-1042
NSN 6650-01-007-4744
NSN 5935-01-644-2700
NSN 6645-01-590-0788
NSN 5895-01-655-3473
NSN 5999-01-246-1517
NSN 5996-01-357-1967
NSN 6150-01-121-1414