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 6240-01-381-2275
NSN 6645-01-445-5235
NSN 5930-00-727-2775
NSN 5999-01-392-0874
NSN 5910-00-740-7286
NSN 5930-01-170-2871
NSN 6220-01-064-2814
NSN 6645-01-028-2186
NSN 6240-01-374-1904
NSN 6150-01-632-3620
NSN 6240-01-288-0555
NSN 5960-01-499-7172