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 5835-01-436-6549
NSN 5930-01-487-3803
NSN 6135-01-466-3980
NSN 6110-01-343-2527
NSN 6610-01-155-2661
NSN 6220-01-094-9524
NSN 5905-01-178-3230
NSN 5999-00-140-9244
NSN 5965-01-633-8849
NSN 5950-01-304-6865
NSN 5905-01-250-1308
NSN 5835-01-381-2683