4-1/2"

Manufactured for use in vacuum piping systems, CF flanges use a mechanical seal to create a leak-tight connection between flanges. When the bolts squeeze the flanges together, the soft metal gasket melds into a thin groove cut into the flat flange surface which provides the leak-tight seal. Flanges operate in temperature from -196°C through 450°C and pressures from 760 Torr (103mbar) to less than 1 x 10-12 Torr (1 x 10-12 mbar). Available in fixed or rotatable designs. A fixed design is a one piece bolt-hole pattern. The rotatable design consists of a weld ring and bolt ring, which rotates to mate with the other flange for easier installation.

Fixed

SKU OD - A Thru Hole - B C D Setback - E F Bolt Hole Diam/Thrd Bolt Holes Bolt Hole Style Price
1809 4.47 2.375 2.5 0.68 0.375 3.628 5/16-24 8 Tapped $65.00 Add to cart
1808 4.47 1.875 2.01 0.68 0.375 3.628 5/16-24 8 Tapped $65.00 Add to cart
1807 4.47 1.375 1.51 0.68 0.375 3.628 5/16-24 8 Tapped $65.00 Add to cart
1806 4.47 0.68 3.628 5/16-24 8 Tapped $65.00 Add to cart
1805 4.47 2.375 2.5 0.68 0.375 3.628 0.332 8 Clearance $55.00 Add to cart
1804 4.47 1.875 2.01 0.68 0.375 3.628 0.332 8 Clearance $55.00 Add to cart
1803 4.47 1.375 1.51 0.68 0.375 3.628 0.332 8 Clearance $55.00 Add to cart
1802 4.47 - - 0.68 - 3.628 0.332 8 Clearance $55.00 Add to cart

Rotatable

SKU OD - A Thru Hole - B C D Setback - E F Bolt Hole Diam/Thrd Bolt Holes Bolt Hole Style Price
1880 4.47 2.375 2.5 0.68 0.375 3.628 5/16-24 8 Tapped $85.00 Add to cart
1879 4.47 1.875 2.01 0.68 0.375 3.628 5/16-24 8 Tapped $85.00 Add to cart
1878 4.47 1.375 1.51 0.68 0.375 3.628 5/16-24 8 Tapped $85.00 Add to cart
1877 4.47 0.68 3.628 5/16-24 8 Tapped $85.00 Add to cart
1876 4.47 2.375 2.5 0.68 0.375 3.628 0.332 8 Clearance $71.00 Add to cart
1875 4.47 1.875 2.01 0.68 0.375 3.628 0.332 8 Clearance $71.00 Add to cart
1874 4.47 1.375 1.51 0.68 0.375 3.628 0.332 8 Clearance $71.00 Add to cart
1873 4.47 - - 0.68 - 3.628 0.332 8 Clearance $71.00 Add to cart