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 6620-01-441-7896
NSN 5965-00-529-0602
NSN 7035-01-226-8894
NSN 6645-01-539-5922
NSN 5895-00-498-8615
NSN 5930-01-523-1188
NSN 6650-00-001-9473
NSN 7035-01-381-7622
NSN 5935-01-253-7660
NSN 5999-01-580-5939
NSN 5945-00-872-2789
NSN 6620-00-280-2874