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 5930-01-495-4120
NSN 5945-00-227-7303
NSN 6240-01-080-0888
NSN 5935-01-356-6171
NSN 5930-01-586-8725
NSN 5960-00-156-0702
NSN 5855-00-051-2792
NSN 6145-01-487-6739
NSN 5895-01-286-6361
NSN 6220-01-232-4744
NSN 5965-01-424-3297
NSN 6220-01-411-1881