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NW/KF Viewports with 7056 Glass Window

NW/KF Viewports

NW/KF 25, Style A Viewport (left) and NW/KF 40, Style B Viewport (right)

The NW/KF Viewports consist of a one piece assembly. The viewport assembly replaces a blanking plate and uses a standard NW/KF Centering Assembly and Clamp for sealing (not included). The window size for NW16 and NW25 is 16mm (0.62"). For NW40 and NW50, the window has a diameter of 38mm (1.51"). The body is made of stainless steel, the window is made of 7056 borosilicate glass; see transmission curve below. Useful for observing inside vacuum lines or chambers. Temperature range -20°C to 200°C (-4°F to 392°F). Viton® seal. Vacuum range down to 1x10-9 Torr.

NW KF Viewport with glass window style A
Style A

Style B



Prod # Description Unit Price Order / Quote
92519-16 NW/KF 16 Viewport with 7056 glass, style B, A=16mm, B=10mm each $166.80
Qty:
92519-25 NW/KF 25 Viewport with 7056 glass, style A, A=16mm, B=10mm each 166.80
Qty:
92519-40 NW/KF 40 Viewport with 7056 glass, style B, A=38mm, B=14mm each 184.00
Qty:
92519-50 NW/KF 50 Viewport with 7056 glass, style A, A=38mm, B=14mm each 208.00
Qty:

Light Transmission Curve for nw kf Viewports with glass window
Glass Transmission Curve
No. 7056 Borosilicate glass,
1mm thick reflection losses included.