Need help? Contact us at (800) 443-8817

Home  > Flanges & Fittings > Large-Flange ISO LF > NW320 > Flange


  • HV rated to 1x10-8 Torr
  • High temperature rated to 200ºC
  • Symmetric, nonrotatable geometry
  • Rotatable bolt ring available
  • Elastomer O-ring seal
  • Claw-Clamp style or bolt style fasting
  • ISO compatible design

Flanges 304ss
Rotatable Bolt Ring Aluminum
O-Rings Viton®, Buna-N® elastomer
Claw Clamps Aluminum
Band Clamps 431ss, heat treated
Claw Clamp M12-1.75 thread, 8-16 required
Band Clamp 0.250-28 thread
Bolt Type Hexagonal Head, M12-1.75 thread, 8-16 required
Nut Type Hexagonal
Size / Torque Clamp: Finger tight
Bolts: 7-10 lb-ft
Vacuum Range 1x10-13
Temperature Range  
Viton® Minimum: -20ºC
Intermittent: 200ºC
Sustained: 150ºC
Buna-N® Minimum: -20ºC
Intermittent: 100ºC
Sustained: 80ºC
Dimensions Clamp Style: 14.57 OD x 12.42 ID maximum
Bolt Style: 16.73 OD x 12.42 ID maximum
For conversion tables click here

For any question on this Section Ask Our Experts

Drawings download if available are indicated by in the Part Number column. Click on this icon to view all downloads.
Literature downloads (including manuals), if available, is indicated by in the Part Number column. Click on this icon to view all available product literature and to download a PDF copy.

This product references the following part numbers: 812005, 813005, 850005, 852005