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 5835-01-084-6997
NSN 5990-01-173-7238
NSN 6685-00-144-6362
NSN 6645-01-160-7707
NSN 5895-01-425-2718
NSN 6650-00-809-1817
NSN 6220-01-116-2411
NSN 6150-00-537-0482
NSN 6240-01-572-6003
NSN 5998-00-484-8211
NSN 6135-01-398-5922
NSN 5945-01-280-2186