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 5945-01-044-2611
NSN 6135-00-269-5843
NSN 5925-00-468-2757
NSN 5960-00-237-2655
NSN 5985-00-128-6215
NSN 6130-01-188-7411
NSN 4140-01-447-4826
NSN 5998-01-057-0629
NSN 5960-01-126-5767
NSN 2925-01-604-8984
NSN 5925-01-356-0069
NSN 6685-01-364-8552