Conflat Flange (CF) Zero Length, UV Grade, Fused Silica Viewport CF 4.50 inch, 304 Stainless Steel
Nor-Cal Products P/N ZVQ-250
These conflat UV grade, zero length fused silica viewports have a flange size of ConFlat (CF) 4.50 inch. ConFlat (CF) flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 200 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 ("mini conflat"), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosion resistant stainless steel.
Conflat Flange (CF) Zero Length Fused Silica Viewport CF 4.50 inch
Material: Fused Silica, 304 SS
Thermal Range: -20 C(40F) to 200 C (392F)
Common Dimensions
A. 2.69"
B. 0.25"
C. 0.68"
D. 4.50"
E. 304 SS sleeve & flange
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