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 6220-01-219-9670
NSN 5975-00-053-5267
NSN 6145-01-502-2183
NSN 6110-01-108-0215
NSN 2925-01-415-0264
NSN 6150-00-262-0477
NSN 6135-01-632-0470
NSN 5998-01-073-6713
NSN 5905-00-004-6100
NSN 5920-01-634-0250
NSN 5905-01-491-6756
NSN 6320-01-364-1840