Viewport Shutters

$ 1,175.00$ 1,500.00

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Huntington Bellows Sealed Viewport Shutters are manually operated rotary shutter assemblies incorporated into a double sided VAC-U-FLANGE® flange. Viewport Shutters are critical to preserving the light transmission capabilities of viewports especially in vacuum coating applications where material can become deposited on the optical substrate. The Shutter can be locked in a closed position to prevent the buildup of material on the viewport glass, then opened for viewing after the process. It can also be locked in any open position in it’s swing of travel. Protect your investment in expensive or hard-to-replace viewports with Huntington Viewport Shutters.

Bellows Sealed Viewport Shutters

Flange OD “A” “B” “C” “D” “E” Part Number
2-3/4″ 5.58 0.54 0.87 1.00 0.75 BFS-276
3-3/8″ 5.93 0.85 1.47 0.87 0.62 BFS-337
4-1/2″ 6.30 1.18 1.85 1.60 0.68 BFS-450
6″ 7.12 1.78 3.24 2.30 0.78 BFS-600
8″ 7.90 2.07 4.46 4.00 0.87 BFS-800


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