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ISO Flanges

ISO flanges are designed to fit tubes with OD above 2 inches. Hositrad ISO flanges are manufactured according to ISO specifications with full compatibility to other manufacturers' standards. There are two types of flange assemblies, claw clamp (ISO-K) and bolt flange (ISO-F). Both use an O-ring hold in place by a centering ring to achieve vacuum seal up to 1x10-9 mbar.
The bolt type flanges are assembled by using a set of bolts to fix the position of the flanges.
The claw clamp flanges use double claw clamps to hold two flanges together. The use of the claw clamps means that mating flanges can be connected together in any orientation.
You can buy ISO components here
Download ISO catalog

Standard Specification
Application:
High Vacuum
Vacuum Range:
1x10-9 mbar 
Materials:
304 (1.4301), 316L (1.4404)
Gasket Materials:
Viton, Perbunan, Kalrez, Aluminium
Flange Sizes:
ISO63~ISO630
 
Temperature Range:
Surface Finish: Bead-blasted. Electro-polished  
on customers request
Other finishes are also available.
1x10-8 mbar < -200°C(150°C sustained)

 
Tube Sizes:
12,7 mm - 640 mm












Cleaning and Packaging

Products with weld joints are 100 percent helium leak tested to assure leak free. To ensure the cleanliness of Hositrad products ready for onsite use, all part are ultrasonically cleaned with de- ionized water. Each bag is affixed with a abel identifying the component's part number.

Flange Information
Flange size   T     D1     D2       F       R    Nr. of Claws (ISO-K) Nr. of Bolts (ISO-F)
ISO 63 12 95 70 5 1,5 3 - 4 4x     9/M8
ISO 80 12 110 83 5 1,5 4 - 8 8x     9/M8
ISO 100 12 130 102 5 1,5 4 - 8 8x     9/M8
ISO 160 12 180 153 5 2,5 4 - 8 8x  11/M10
ISO 200 12 240 213 5 2,5 6 - 12 12x 11/M10
ISO 250 12 290 261 5 2,5 6 - 12 12x 11/M10
ISO 320 17 370 318 5 2,5 8 - 12 12x 14/M12
ISO 400 17 450 400 7,5 4 8 - 12 16x 14/M12
ISO 500 17 550 501 7,5 4 12 - 16 16x 14/M12
ISO 630 22 690 651 7,5 4 16 - 20 20x 14/M12