Kurt J. Lesker VPZL‑275 Viewport

The VPZL-275 is a zero‐length CF-flanged viewport from Kurt J. Lesker designed for UHV (Ultra High Vacuum) applications.
The standard variant features a 2¾″ (69.85 mm) OD DN35CF/DN40CF flange, a Kodial glass window of 3.0 mm thickness, and a view area of 1.50 inches (38.0 mm).

Key Specifications

• Flange / Mounting: DN35CF-DN40CF (2.75 in / 69.85 mm OD)

• Window Material (standard): Kodial glass

• View Area: 1.50 inches (38.0 mm)

• Window Thickness: 0.120 inches (3.0 mm)

• Flange Material: 304L Stainless Steel