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 6145-00-883-7420
NSN 6105-00-234-1278
NSN 5960-01-395-9834
NSN 6610-01-580-3272
NSN 6145-01-634-0388
NSN 5985-01-184-0684
NSN 6105-01-100-4613
NSN 5985-01-358-1130
NSN 5915-01-539-5928
NSN 5895-01-608-5404
NSN 5855-00-610-4052
NSN 6240-01-130-7854