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 5985-01-538-5716
NSN 5910-01-032-5525
NSN 7035-01-271-1643
NSN 5998-01-321-5241
NSN 6685-00-528-5175
NSN 6645-00-888-5820
NSN 5930-01-231-1752
NSN 4140-01-048-3340
NSN 5960-00-626-3644
NSN 5930-00-007-0046
NSN 6220-01-134-0344
NSN 2925-01-196-6187