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 5945-01-273-4013
NSN 5960-00-097-7007
NSN 5996-01-438-0323
NSN 5996-00-226-5364
NSN 4140-01-264-7466
NSN 5965-00-802-0060
NSN 5935-01-572-7883
NSN 5998-01-386-5773
NSN 5910-01-399-8737
NSN 2925-00-315-8442
NSN 6150-01-604-5119
NSN 4140-01-236-6637