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 5975-01-550-5350
NSN 5945-00-340-6868
NSN 6645-01-170-0341
NSN 5935-01-615-1792
NSN 5945-01-367-2754
NSN 5935-01-355-2434
NSN 5975-00-284-2207
NSN 5920-00-584-4592
NSN 5999-01-616-9382
NSN 6320-01-149-2808
NSN 5960-01-567-1096
NSN 5920-01-221-0510