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 5910-01-082-6840
NSN 6650-01-372-6013
NSN 5895-00-153-2595
NSN 5895-01-010-1742
NSN 5960-00-422-5376
NSN 5925-01-441-8723
NSN 6685-01-203-5023
NSN 6610-01-629-4140
NSN 6610-00-890-9099
NSN 6645-01-388-7364
NSN 5945-00-408-0727
NSN 6145-01-624-1167