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 6110-01-445-3928
NSN 6685-01-142-4572
NSN 5945-00-300-5689
NSN 6240-01-037-2215
NSN 6150-01-039-6886
NSN 5905-01-484-5521
NSN 6130-01-071-2820
NSN 5990-01-602-6701
NSN 5975-01-580-6569
NSN 5960-01-195-2166
NSN 5930-01-090-1061
NSN 6220-01-397-8060