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 6685-00-836-3002
NSN 6650-01-633-9147
NSN 5998-01-359-4039
NSN 6110-01-491-4207
NSN 6650-01-514-7809
NSN 6610-01-197-5249
NSN 5965-00-436-2226
NSN 5960-01-138-5897
NSN 6620-01-358-5249
NSN 5990-01-438-8228
NSN 5965-01-218-7795
NSN 6685-01-154-0572