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 5990-01-440-7135
NSN 5835-00-463-6699
NSN 6645-00-960-6594
NSN 5855-01-632-8597
NSN 6240-00-001-5353
NSN 5998-00-687-8609
NSN 6105-00-253-3828
NSN 6610-00-886-3652
NSN 5935-01-541-4597
NSN 5985-00-562-9774
NSN 5915-00-349-2198
NSN 6320-01-129-9656