High Precision Length Vacuum Bellows Adapter CF 4.5" To CF 2.75" Conflat Flanges

High Precision Length Vacuum Bellows Adapter CF 4.5" To CF 2.75" Conflat Flanges. Condition is "Certified refurbished". Shipped with USPS Retail Ground.

Nut/bolt assembly allows for high precision tuning of the length of the bellows, if there is a high degree of adjustment required in your system.

One flange of the bellows is 4-1/2 inches, and the other flange is 2-3/4 inches. Both flanges are 4.5 inches in outer diameter, however, because the 2.75 inch flange has a disk welded on its outside. See photos to see what I'm describing.

Knife edges are in perfect condition, and this flange has not been used. It is new old stock and was cleaned and leak checked from the factory.

Great for optical alignment or higher precision length adjustment between two ultra-high vacuum chambers.