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 5905-01-279-9389
NSN 6240-00-827-0889
NSN 5915-00-912-4098
NSN 5998-01-300-9103
NSN 6105-01-618-1487
NSN 5960-00-941-2639
NSN 4140-00-432-5593
NSN 5985-01-492-5416
NSN 4140-01-408-7232
NSN 5945-01-461-0967
NSN 5985-01-554-6425
NSN 6145-01-493-5833