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Prices are current as of Saturday, 26/09/2020.
Prices shown are in AUD and GST exclusive. Tax is added at checkout.

AU $342.00
Availability: Backorder

Please choose carefully. Returns of this item are subject to approval.

Product Code: VVP-KF16-B

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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 (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 deg. C to 200 deg. C (-4 deg. F to 392 deg. F). 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

NW Viewport with glass window style A

Style A

NW Viewport with glass window style B

Style B

Light transmission curve for glass viewports

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


Orders with items in stock are packed within 24 hours. We ship with our best choice of courier, depending on goods ordered and shipping address provided.


Standard delivery

Express delivery


Next day



2-3 business days



4-10 business days

2-3 business days


6-14 business days

2-3 business days



5-14 business days

*Note: Delivery times are as provided by our carriers and are estimates only. Delays may occur during peak periods, and due to factors outside the carriers' control.

Standard shipping is $15 in Australia (free on orders over $200). Add $5 to ship Express (under 2kg only)


Order online and collect from our warehouse in Townsville.


Freight Charge

Ready for collection

11 Carlton Street, Kirwan


Once invoice has been emailed
(Less than 1 business day)

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