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 2925-00-497-7808
NSN 5835-01-203-8295
NSN 5996-01-590-1368
NSN 5960-01-146-0289
NSN 6645-01-450-4849
NSN 5935-01-514-6553
NSN 6320-00-343-1798
NSN 6105-01-303-3088
NSN 6320-00-841-2279
NSN 6685-01-549-6157
NSN 5998-01-317-4149
NSN 6320-00-036-3688