Nipple Full, 14.5 in. height, NW-320 Fittings, ISO-K ISO Large Flange Size NW-320, Stainless Steel

These bolted half nipple weld stubs follow International Standards Organization (ISO) standards and have a flange size of NW-320 ISO-F 320. ISO flanged vacuum fittings are commonly used to build process vacuum plumbing and systems for industrial applications. These fittings use 12 nuts and bolts to attach to other vacuum hardware. The Viton® centering ring contains a rubber/elastomeric o-ring. The ISO standard sizes for large flanges are NW-63, NW-80, NW-100, NW-160, NW-200, NW-250, NW-320, NW-400, NW-500, NW-630. These vacuum flanges are made of stainless steel.