The CF Straight Reducer is designed to connect two different CF flange sizes in a straight-line vacuum connection while maintaining high vacuum integrity. The catalog states that it features a rotatable flange (reduced flange) and that other nominal diameters and dimensions are available on request. It offers a pressure range of 1 × 10⁻¹² mbar to ambient pressure, tightness of ≤ 1 × 10⁻¹⁰ mbar l/s, and a bake-out range up to 450 °C. It is available in Stainless Steel 304 / 1.4301 and Stainless Steel 316L / 1.4404, with multiple main flange and reducer flange combinations. The tube surface is specified as glass bead blasted, with a polished version available on request.