NW/KF viewport with 7056 glass

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 Centring Assembly and Clamp for sealing (not included). The window size for NW16 and NW25 is 16mm. For NW40 and NW50, the window has a diameter of 38mm. 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 -20C to 200C. Viton seal. Vacuum range down to 1x10-9 Torr.VVP-KF16-B Viewport with 7056 glass, KF16, style B, A=16mm, B=10mmVVP-KF25-A Viewport with 7056 glass, KF25, style A, A=16mm, B=10mmVVP-KF40-B Viewport with 7056 glass, KF40, style B, A=38mm, B=14mmVVP-KF50-A Viewport with 7056 glass, KF50, style A, A=38mm, B=14mm

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 Centring Assembly and Clamp for sealing (not included). The window size for NW16 and NW25 is 16mm. For NW40 and NW50, the window has a diameter of 38mm. 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 -20C to 200C. Viton seal. Vacuum range down to 1x10^-9 Torr.

VVP-KF16-B Viewport with 7056 glass, KF16, style B, A=16mm, B=10mm

VVP-KF25-A Viewport with 7056 glass, KF25, style A, A=16mm, B=10mm

VVP-KF40-B Viewport with 7056 glass, KF40, style B, A=38mm, B=14mm

VVP-KF50-A Viewport with 7056 glass, KF50, style A, A=38mm, B=14mm

Style A

Style B

Glass Transmission Curve. No. 7056 Borosilicate glass, 1mm thick reflection losses included.