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ISO Large-Flange Accessories

Larson Electronic Glass offers hardware for ISO Large-Flange and vacuum fittings. Our inventory includes claw-clamp style blank and bored flanges, as well as blank and bored bolt style flanges, stainless steel centering ring assemblies, double claw clamps, bolt sets, and rotatable bolt ring assemblies.


  • SS/Viton® Centering ring assemblies
  • Aluminum Double Claw Clamp
  • ISO M8 Bolt set
  • Replacement Viton® o-rings

Request a quote on the Large-Flange® accessories you need, or contact Larson Electronic Glass to learn more.

Larson Electronic Glass offers hardware for "Large-Flange" flanges from NW63 to NW200

ISO Large-Flange AccessoriesPriceModel NumberPart NumberPrice
NW63 Centering Ring SS/Viton65913606913606$65.00
NW80 Centering Ring SS/Viton80913608913608$80.00
NW100 Centering Ring SS/Viton80913610913610$80.00
NW160 Centering Ring SS/Viton95913616913616$95.00
NW200 Centering Ring SS/Viton14091362091362040.00
NW63 Viton O-ring129137069137062.00
NW80 Viton O-ring189137089137088.00
NW100 Viton O-ring189137109137108.00
NW160 Viton O-ring30913716913716$30.00
NW200 Viton O-ring35913720913720$35.00
NW63 Double Claw Clamp (AL)109138069138060.00
NW80 Double Claw Clamp (AL)109138089138080.00
NW100 Double Claw Clamp (AL)109138109138100.00
NW160 Double Claw Clamp (AL)109138169138160.00
NW200 Double Claw Clamp (AL)109138209138200.00
NW63 Bolt Set pkg/4.109139069139060.00
NW80 Bolt Set pkg/8.20913908913908$20.00
NW100 Bolt Set pkg/8.20913910913910$20.00
NW160 Bolt Set pkg/8.30913916913916$30.00
NW200 Bolt Set pkg/12.40913920913920$40.00