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 5855-01-171-2818
NSN 6135-00-416-2898
NSN 6130-01-188-7411
NSN 5999-01-610-7635
NSN 5975-01-293-9985
NSN 6610-00-931-3656
NSN 6130-01-252-8823
NSN 4140-01-384-7706
NSN 5998-00-881-5226
NSN 5855-01-382-8725
NSN 5935-00-368-4885
NSN 6645-00-153-3834