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 6240-01-094-7717
NSN 6610-00-627-7406
NSN 6145-01-091-4652
NSN 6150-00-738-2470
NSN 6650-00-140-8776
NSN 5998-01-321-3138
NSN 6130-01-341-7076
NSN 6130-00-470-8589
NSN 6650-00-389-4111
NSN 5930-00-552-1946
NSN 6645-01-301-5563
NSN 5920-00-190-7466