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 6220-01-411-6542
NSN 6130-00-705-4959
NSN 6685-00-670-4118
NSN 6620-01-139-6455
NSN 5999-01-100-9005
NSN 5990-01-478-8638
NSN 5975-00-658-3718
NSN 5930-00-156-9797
NSN 5975-01-441-1942
NSN 4140-00-054-6467
NSN 5965-00-505-2166
NSN 5999-00-221-4615