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 5990-01-353-3691
NSN 6130-01-254-3934
NSN 5915-01-607-9736
NSN 5990-00-451-7630
NSN 5935-01-227-6042
NSN 6620-01-106-3553
NSN 5950-00-058-9593
NSN 5945-01-177-2855
NSN 5965-00-285-0745
NSN 5945-00-725-4552
NSN 5950-01-005-0111
NSN 6685-01-163-6126