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 5996-01-545-6579
NSN 4140-01-291-0376
NSN 5930-01-166-2782
NSN 7035-01-352-6235
NSN 5965-01-337-8625
NSN 5998-00-194-0097
NSN 6220-01-499-9978
NSN 5905-00-664-4218
NSN 6240-00-045-9844
NSN 6145-01-176-4047
NSN 5895-00-309-0213
NSN 5990-00-864-9690