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 5985-01-060-7525
NSN 6105-01-625-9636
NSN 5935-01-358-3675
NSN 7035-00-206-6123
NSN 6135-01-472-5681
NSN 5990-00-252-1702
NSN 6150-01-220-9378
NSN 5990-00-149-8181
NSN 6620-01-492-8470
NSN 5965-00-408-5501
NSN 5910-00-379-2349
NSN 6240-00-735-7599