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 5985-00-144-1783
NSN 5855-01-053-0679
NSN 6650-01-368-3286
NSN 5930-01-449-1076
NSN 5975-01-312-0085
NSN 5920-00-279-6584
NSN 5910-01-463-9061
NSN 6685-00-788-7345
NSN 5855-01-252-5424
NSN 6650-01-533-1267
NSN 5935-00-240-2387
NSN 5915-00-954-0559