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 5945-00-877-5234
NSN 5945-00-588-2523
NSN 5835-00-484-1529
NSN 5950-00-792-8082
NSN 5975-01-548-4348
NSN 5990-00-960-6310
NSN 6130-00-726-9628
NSN 6650-01-266-6701
NSN 5999-00-189-0772
NSN 5965-01-352-0961
NSN 6610-01-108-7780
NSN 5855-00-631-4565