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 6650-01-378-6868
NSN 6130-00-662-8557
NSN 5895-00-499-4469
NSN 5975-00-647-4968
NSN 5990-01-321-2997
NSN 5998-00-192-6586
NSN 5935-01-545-2651
NSN 6685-01-128-0174
NSN 6150-00-518-1402
NSN 5925-01-250-3306
NSN 5895-00-038-0847
NSN 6645-01-112-6373