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 6650-01-421-8424
NSN 5999-01-358-8959
NSN 5910-01-100-1161
NSN 6620-00-736-8457
NSN 5996-00-570-6937
NSN 5930-00-838-4685
NSN 5925-01-546-3408
NSN 6220-01-167-7859
NSN 4140-01-406-5344
NSN 6135-01-142-6456
NSN 5960-00-295-5413
NSN 5996-01-007-8093