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 5895-00-106-2857
NSN 2925-01-134-9175
NSN 5965-01-415-1521
NSN 5975-00-983-5239
NSN 6240-01-106-2447
NSN 6220-00-657-2098
NSN 6650-01-370-5265
NSN 6110-00-840-6560
NSN 5998-01-346-8898
NSN 6135-00-057-2005
NSN 5935-01-155-3752
NSN 6620-00-062-4746