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 6150-01-353-6990
NSN 5925-00-401-2739
NSN 6650-01-290-4001
NSN 5905-01-322-7983
NSN 6645-01-556-5263
NSN 5965-00-082-8987
NSN 5925-01-645-4909
NSN 6650-01-428-2251
NSN 6220-00-972-7933
NSN 5915-01-447-9167
NSN 5965-00-950-0602
NSN 5975-01-347-8402