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 6240-00-832-6867
NSN 5925-00-125-8918
NSN 5930-01-178-6900
NSN 2925-00-124-5465
NSN 5945-01-423-7508
NSN 5910-01-129-1606
NSN 5965-00-871-8987
NSN 5950-00-461-1522
NSN 5996-01-116-2523
NSN 4140-01-142-6443
NSN 5985-00-285-0798
NSN 5998-00-960-8513