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 6240-00-933-1766
NSN 4140-01-259-4149
NSN 5910-01-389-3068
NSN 5905-01-250-6059
NSN 5945-01-459-7700
NSN 5998-00-959-2283
NSN 5985-00-126-1104
NSN 6620-01-087-2354
NSN 6130-01-415-1423
NSN 5930-00-258-9997
NSN 5960-01-599-4726
NSN 6320-01-300-7994