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 5965-00-403-4287
NSN 5996-01-112-0154
NSN 5998-01-301-3745
NSN 5950-01-465-8379
NSN 6610-01-533-7458
NSN 6610-01-374-9048
NSN 5998-01-535-6413
NSN 5960-00-435-1967
NSN 6150-01-142-6163
NSN 6240-01-374-6328
NSN 2925-01-511-5359
NSN 6135-01-543-4256