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NW50 Viewport
Kodial Glass (Alkali Borosilicate 7056)

NW50 Kodial Glass Viewport
NW, KF, QF and ZVP Series
Rated for Vacuum NOT Pressure

• A: 1.26"
• B: 1.65"
• C: 0.28"
• D: 0.12"
• E: 2.95"
• Viewing Area: 1.49"

• NW50 (KF50) Flange OD: Ø2.95"
Kodial Glass (alkali borosilicate 7056)

NW50 Glass Viewport

NW50 Series Viewports
• Optical discs are Kodial Glass (alkali borosilicate 7056)
• 304 Stainless

Bakeout to 200°C
• due to elastomeric fluorocarbon o-ring seal
• heating rate should not exceed 2-3° per minute


Caution Required When Using Viewports
• Viewports are rated for Vacuum NOT Pressure

• All viewports are fragile and must be handled and mounted with extreme caution

• NEVER use a viewport that appears to be, or is known to be damaged

• Never scratch the viewing area; a weakened viewport may implode (or explode) under wrong conditions.

• Make sure the glass chosen has a reasonable transmission at the wavelengths of interest.

• Remember, what is not transmitted may be reflected or absorbed.

Contact LDS Vacuum with any questions:
Phone (407)862-4643 via Fax (407)862-8723 or

LDS Vacuum Products is a 100% woman owned company and
a certified Woman Owned Small Business (WOSB)
The logos and/or trademarks appearing on this page are not owned by or registered to LDS but, rather, designate products sold by LDS, and are owned and/or registered to the manufacturers or suppliers of the products.