A zero length viewport has a thickness no larger than that of its mounting flange. It provides a wide angle viewing window for your vacuum chamber as there are no tubulation walls to restrict observation. Manufactured using Sapphire, these viewports are used in high temperature high transmission applications.
HV and UHV compatable
Maximum Temperature 450°C
Minimum Temperature minus 20°C
Maximum Rate of Temperature Change 3°C per minute
Leak Rate <1x10-10 mbar ls-1
Pressure Range 1 bar to 1x10-11 mbar
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To make a leak tight UHV seal between two conflat flanges, a gasket is required. Our gaskets are manufactured from quality controlled precision sheet material.
To provide protection against potential X-Rays, we offer a range of lead glass disks that fit into the recess on the top of the viewport.