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 5835-01-511-5337
NSN 6105-00-869-4000
NSN 4140-00-832-3286
NSN 6110-01-238-1315
NSN 5935-01-419-3791
NSN 5960-01-460-8456
NSN 7035-01-152-7331
NSN 5998-00-296-8522
NSN 5855-00-962-5792
NSN 6220-00-558-2147
NSN 6620-00-098-5652
NSN 5996-01-379-0664