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 5998-01-358-8119
NSN 5925-01-157-6632
NSN 6145-01-100-7104
NSN 6240-01-432-7926
NSN 6105-00-055-9323
NSN 5945-00-584-9251
NSN 5930-01-626-7749
NSN 5996-00-107-5357
NSN 6135-01-131-9352
NSN 6685-01-212-9607
NSN 6110-00-824-2162
NSN 5935-01-395-2486