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 5935-01-485-8764
NSN 5895-01-332-2332
NSN 5925-00-484-7695
NSN 6150-00-542-8668
NSN 6105-01-158-7618
NSN 6220-01-322-0671
NSN 6645-01-194-3214
NSN 5920-01-401-5315
NSN 6650-01-505-2817
NSN 5920-01-431-3263
NSN 5930-00-203-1321
NSN 6620-01-237-0254