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 4140-01-309-1368
NSN 6645-00-986-1110
NSN 5915-01-653-8863
NSN 5855-00-149-0766
NSN 6620-00-766-3974
NSN 5910-01-568-4483
NSN 6650-01-290-4001
NSN 6620-01-484-4153
NSN 5975-01-171-0725
NSN 5835-00-334-6556
NSN 7035-00-991-6877
NSN 6645-00-586-7198