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 5930-01-090-0223
NSN 6650-01-614-5281
NSN 5985-01-582-5641
NSN 5945-01-174-1128
NSN 6105-01-406-3627
NSN 5905-00-675-4889
NSN 5905-01-096-8605
NSN 6620-00-684-6771
NSN 6145-01-139-4859
NSN 6645-00-690-0423
NSN 5935-00-501-4093
NSN 5960-00-584-4553