ISO Flanges

ISO Flanges

ISO flanges are made from Argon Oxygen Decarburization (AOD) 304 stainless steel. This material is certified to meet ASTM-240 and has less than 0.01% sulfur in order to prevent sulfur stringers. Grain size is 3 to 6 per ASTM E-112.

Specifications

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ISO Clamp Style Flanges

 
General: Optional fastener or nonrotatable flanges with clearance bolt holes
Nominal OD sizes: ISO-63 to ISO-500
Tube sizes: 2-1/2 to 20 inches
Materials
   Flange: 304 or 316L stainless steel 
   O-rings: Viton, Buna
   Bolts: 18-8 stainless steel
Vacuum range: 
   Elastomer seal: >= 1 x 10-8 Torr - High vacuum
   EVAC metal seal: >= 1 x 10-11 Torr - UHV
Temperature range: 
   Viton: -20°C to 200°C 
   Buna: -30°C to 110°C
   EVAC metal seal: -270°C to 150°C 

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Additional Information

MODEL NUMBER DIAGRAM NOMINAL
ID
A B C D E
ISO-63-000-OF A - 3.740 0.47 - - -
ISO-63-250-OF B 21/2 3.740 0.47 2.438 2.510 0.250
ISO-80-000-OF A - 4.331 0.47 - - -
ISO-80-300-OF B 3 4.331 0.47 2.938 3.010 0.250
ISO-100-000-OF A - 5.118 0.47 - - -
ISO-100-400-OF B 4 5.118 0.47 3.910 4.010 0.250
ISO-160-000-OF A - 7.087 0.47 - - -
ISO-160-600-OF B 6 7.087 0.47 5.875 6.020 0.375
ISO-200-000-OF A - 9.449 0.47 - - -
ISO-200-800-OF B 8 9.449 0.47 7.875 8.020 0.375
ISO-250-000-OF A - 11.417 0.47 - - -
ISO-250-1000-OF B 10 11.417 0.47 9.875 10.020 0.375
ISO-320-000-OF A - 14.567 0.67 - - -
ISO-320-1200-OF B 12 14.567 0.67 11.875 12.020 0.375
ISO-320-1275-OF B 12 14.567 0.67 12.420 12.770 0.375
ISO-400-000-OF A - 17.716 0.67 - - -
ISO-400-1600-OF B 16 17.716 0.67 15.624 16.020 0.375
ISO-500-000-OF A - 21.653 0.67 - - -
ISO-500-2000-OF B 20 21.653 0.67 19.624 20.020 0.3
 
 
 

ISO 316L Clamp Style Flanges

General: Optional fastener or nonrotatable flanges with clearance bolt holes
Nominal OD sizes: ISO-63 to ISO-500
Tube sizes: 2-1/2 to 20 inches
Materials
   Flange: 304 or 316L stainless steel 
   O-rings: Viton, Buna
   Bolts: 18-8 stainless steel
Vacuum range: 
   Elastomer seal: >= 1 x 10-8 Torr - High vacuum
   EVAC metal seal: >= 1 x 10-11 Torr - UHV
Temperature range: 
   Viton: -20°C to 200°C 
   Buna: -30°C to 110°C
   EVAC metal seal: -270°C to 150°C 

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Additional Information

MODEL NUMBER DIAGRAM NOMINAL
ID
A B C D E
ISO-63-250-OF-316L B 21/2 3.740 0.47 2.438 2.510 0.250
ISO-80-300-OF-316L B 3 4.331 0.47 2.938 3.010 0.250
ISO-100-400-OF-316L B 4 5.118 0.47 3.910 4.010 0.250

ISO Rotatable Bolt Ring and Retainer Ring

General: Optional fastener or nonrotatable flanges with clearance bolt holes
Nominal OD sizes: ISO-63 to ISO-500
Tube sizes: 2-1/2 to 20 inches
Materials
   Flange: 304 or 316L stainless steel 
   O-rings: Viton, Buna
   Bolts: 18-8 stainless steel
Vacuum range: 
   Elastomer seal: >= 1 x 10-8 Torr - High vacuum
   EVAC metal seal: >= 1 x 10-11 Torr - UHV
Temperature range: 
   Viton: -20°C to 200°C 
   Buna: -30°C to 110°C
   EVAC metal seal: -270°C to 150°C 

Additional Information

MODEL NUMBER FLANGE
SIZE
A B C
ISO-63-BR ISO-63 4.331 5.118 0.472
ISO-80-BR ISO-80 4.921 5.709 0.472
ISO-100-BR ISO-100 5.709 6.496 0.472
ISO-160-BR ISO-160 7.874 8.858 0.630
ISO-200-BR ISO-200 10.236 11.220 0.630
ISO-250-BR ISO-250 12.205 13.189 0.630
ISO-320-BR ISO-320 15.551 16.732 0.787
ISO-400-BR ISO-400 18.898 20.079 0.787
ISO-500-BR ISO-500 22.835 24.016 0.787

ISO Non Rotatable Flanges

General: Optional fastener or nonrotatable flanges with clearance bolt holes
Nominal OD sizes: ISO-63 to ISO-500
Tube sizes: 2-1/2 to 20 inches
Materials
   Flange: 304 or 316L stainless steel 
   O-rings: Viton, Buna
   Bolts: 18-8 stainless steel
Vacuum range: 
   Elastomer seal: >= 1 x 10-8 Torr - High vacuum
   EVAC metal seal: >= 1 x 10-11 Torr - UHV
Temperature range: 
   Viton: -20°C to 200°C 
   Buna: -30°C to 110°C
   EVAC metal seal: -270°C to 150°C 
 

Other Product Images