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 5998-00-201-9829
NSN 5855-01-081-4114
NSN 5920-01-193-1356
NSN 6150-00-379-4656
NSN 5855-01-020-7982
NSN 2925-00-698-4882
NSN 5998-00-399-2830
NSN 6135-00-057-2005
NSN 6650-01-497-5782
NSN 6220-01-068-1360
NSN 6110-01-548-6856
NSN 5905-01-337-4845