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 5920-00-463-4684
NSN 6650-01-607-6891
NSN 5975-00-518-0780
NSN 5990-01-606-9305
NSN 5930-00-620-6853
NSN 6240-01-544-3710
NSN 5950-00-932-3232
NSN 5910-01-616-0611
NSN 6320-01-388-3125
NSN 5910-00-549-4895
NSN 6645-00-695-2343
NSN 5910-01-334-5150