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 6685-01-363-0516
NSN 5905-01-367-6746
NSN 5855-01-610-1198
NSN 5990-00-424-8872
NSN 5945-01-172-4284
NSN 6150-01-520-3664
NSN 5930-00-678-4052
NSN 5950-01-381-2994
NSN 5895-00-791-5661
NSN 5960-00-920-7996
NSN 6110-01-513-2179
NSN 5945-01-416-0828