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 5930-01-476-9383
NSN 5999-01-042-7323
NSN 5915-01-500-3691
NSN 5975-01-148-3516
NSN 5930-01-661-2970
NSN 5999-01-613-4320
NSN 5925-01-422-4748
NSN 6685-01-632-8809
NSN 6650-00-273-8732
NSN 4140-01-531-4299
NSN 5998-00-801-7925
NSN 5999-00-289-1472