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 6150-01-622-8560
NSN 6110-00-610-0555
NSN 5960-00-771-2824
NSN 4140-01-389-5904
NSN 6620-00-808-7277
NSN 5910-01-218-8290
NSN 6145-01-358-8521
NSN 5950-01-209-4044
NSN 6130-01-362-5527
NSN 6620-01-258-2570
NSN 5950-01-575-0928
NSN 6650-00-769-3003