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 5945-00-829-3221
NSN 6105-00-401-2149
NSN 6110-01-620-5898
NSN 6135-00-548-2765
NSN 5985-00-473-2161
NSN 6240-00-822-4571
NSN 6320-01-425-1417
NSN 6135-00-461-3590
NSN 6320-01-192-0332
NSN 6130-01-574-2234
NSN 5835-01-103-3583
NSN 6240-01-473-3781