Ultra High Vacuum Flanges UHV Flanges

Ultra High Vacuum (UHV) Flanges

Ultra High Vacuum (UHV) Flanges
REFLEX Analytical introduces a new series of Ultra High Vacuum (UHV) Flanges and Viewports that can achieve UHV performance at 10 -12cc/second established with fluorocarbon o-ring seals and a differentially pumped vacuum system. By pumping on the differential section with only a mechanical pump, UHV pressures on the inside can be routinely achieved. CLICK HERE to watch a short video demonstrating how easy it is to establish. This is the most reliable solution to replace and eliminate vacuum seal failures made with either epoxy or solder.

The UHV Flanges and Viewports are used to mount optical transmission windows to a ultra high vacuum system that cannot be sealed by conventional means. The user can easily remove the Aluminum retainer, repolish or replace transmission windows that have become cloudy or degraded, thereby extending their useful life. Also if the experimental requirements are revised, only the window itself can be changed which offers considerable cost savings. Note that the o-ring seals on both sides of the window (in the cover plate as well as in the flange) protrude a little to prevent the metal surfaces from actually contacting the fragile transmission window material. Each mounted assembly offers a UHV seal and is leak tested prior to shipment.

Flange and viewport diameters include 2.75, 3.38, 4.50 and 6.0. Each assembly can be baked to 150C and can incorporate a ultraviolet, visible or infrared transmitting window material such as BaF2 Barium Fluoride, CaF2 Calcium Fluoride, Fused Silica, IR Quartz, KBr Potassium Bromide, LiF Lithium Fluoride, MgF2 Magnesium Fluoride, Sapphire, ZnSe Zinc Selenide or other optical material.

Scroll below for order details. Choose the desired diameter/clear aperture then select the preferred optical material from the drop down menus. An optional extension is available for attaching a N2 purge.
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2.75" Ultra High Vacuum Flange
1.125 Clear Aperture
3.38" Ultra High Vacuum Flange
1.6 Clear Aperture
4.50" Ultra High Vacuum Flange
1.96 Clear Aperture
6.0" Ultra High Vacuum Flange
3.68 Clear Aperture
N2 Nitrogen Purge Extension