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 5999-01-522-0190
NSN 6150-00-230-1745
NSN 4140-00-969-3943
NSN 6650-00-871-2983
NSN 5835-01-178-4154
NSN 2925-01-079-6229
NSN 5920-01-280-5089
NSN 5930-01-213-7565
NSN 6320-01-610-4410
NSN 6240-01-218-5187
NSN 5960-00-034-7925
NSN 6150-01-476-3538