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 6620-01-367-2597
NSN 5996-01-577-3838
NSN 5905-01-483-1338
NSN 6645-01-574-6160
NSN 4140-01-553-9193
NSN 5950-01-142-7859
NSN 6130-01-428-2555
NSN 6650-00-078-5773
NSN 6240-01-365-7996
NSN 5960-01-029-2940
NSN 6145-00-927-0135
NSN 4140-00-095-6452