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 6240-00-518-3541
NSN 6650-00-269-5000
NSN 6150-01-479-4568
NSN 6320-01-384-3850
NSN 5855-01-125-4768
NSN 5915-01-063-7561
NSN 5998-01-593-8180
NSN 2925-00-862-8550
NSN 5985-01-158-6842
NSN 6105-01-496-7948
NSN 6620-01-622-3035
NSN 5998-01-346-0997