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 6650-01-049-5361
NSN 5950-00-243-2011
NSN 6135-01-142-6456
NSN 6105-00-067-7517
NSN 5965-01-526-4758
NSN 5935-00-478-7658
NSN 2925-01-519-3221
NSN 6240-00-017-9006
NSN 2925-01-642-0944
NSN 6105-01-479-8295
NSN 5835-01-302-6844
NSN 6150-01-426-8986