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 5855-00-797-8217
NSN 6650-01-368-3286
NSN 5905-00-368-3411
NSN 6610-01-435-5425
NSN 6620-00-422-5866
NSN 5950-00-028-4118
NSN 5835-01-414-3258
NSN 6110-00-112-1476
NSN 5975-01-046-2103
NSN 5910-01-381-5624
NSN 6130-01-607-7369
NSN 5998-01-206-4672