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 5990-00-457-8940
NSN 5935-01-297-0490
NSN 6620-00-401-8489
NSN 5915-00-358-2407
NSN 5835-00-647-2104
NSN 6105-01-488-5612
NSN 6240-01-578-1603
NSN 5960-01-521-5827
NSN 5999-00-877-8933
NSN 5999-00-801-2646
NSN 6645-01-162-4509
NSN 6240-01-080-7778