These are ASA 4.25 /ANSI 1 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 4.25 in. (108) = 3.125 in. (79.4) = 0.50 in. (12.7) = 0.625 in (15.8), 4 Holes = 0.92 in. (23.4) = 1.00 in. (25.7) Other SpecificationsMade of 304 Stainless SteelHas 4 Bolt HolesBolt Hole Diameter of 0.625 inches (15.8 mm)

These are ASA 5.0 /ANSI 1.5 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 5.0 in. (127) = 3.875 in. (98.4) = 0.50 in. (12.7) = 0.625 in (15.8), 4 Holes = 1.42 in. (36) = 1.5 in (38.4) Other SpecificationsMade of 304 Stainless SteelHas 4 Bolt HolesBolt Hole Diameter of 0.625 inches (15.8 mm)

These are ASA 6.0 /ANSI 2 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 6.00 in. (152.4) = 4.75 in. (120.6) = 0.50 in. (12.7) = 0.75 in. (19), 4 Holes = 1.91 in. (48.6) = 2.00 in. (51) Other SpecificationsMade of 304 Stainless SteelHas 4 Bolt HolesBolt Hole Diameter of 0.75 inches (19 mm)Non-Grooved Flange

These are ASA 7.5 /ANSI 3 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. They are welded to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 6.00 in. (152.4) = 0.50 in. (12.7) = 0.75 in. (19), 4 Holes = 2.87 in. (73) = 3.00 in (76.8) Other SpecificationsMade of 304 Stainless SteelHas 4 Bolt Holes

This is an ASA 3 inch fixed bored ASA flange with NO O-Ring groove. These flanges are made with weld prep and have tube boring. They are designed to be welded onto tubing. Both sides are smooth with NO O-Ring Groove. They are made of 304 Stainless Steel. See dimensions above in middle graphic.ASA ANSI flanges come in smooth or grooved flanges, bored or non bored, rotatable or non rotatable, and adapters to other flange types. With tubing sizes ranging from 1 in. to 12 in. diameter and outer diameters from 4.25 in. to 16 in. The Sizes of ASA are from 1 in. to 10 in. The two flanges that will mate can be two alike smooth flange faces or two unlike, one smooth face and one groove face. The flanges are mated together with nuts, bolts and washers. (See graphic below)

These are ASA 9.0 /ANSI 4 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. They are welded to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 9.00 in. (228.6) = 7.5 in. (190.5) = 0.50 in. (12.7) = 0.75 in. (19), 8 Holes = 3.87 in. (98.4) = 4.02 in (102.2) Other Specification Made of 304 Stainless Steel

These are ASA 13.5 /ANSI 8 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. They are welded to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 13.5 in. (342.9) = 11.75 in. (298.5) = 0.75 in. (19) = 0.81 in. (20.6), 8 Holes = 7.83 in. (198.9) = 8.00 in. (203.7)Other SpecificationsMade of 304 Stainless Steel

These are ASA 11.0 /ANSI 6 bored flanges, with no O-ring groove, are not bored, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. They are welded to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 11.0 in. (279.4) = 9.5 in. (241.3) = 0.75 in. (19) = 0.812 in. (20.6), 8 Holes = 5.823 in. (147.9) = 6.00 in (152.9) Other Specifications

These are ASA 16.0 /ANSI 10 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. They are welded to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 16.00 in. (406.4) = 14.25 in. (362) = 1.00 in. (25.4) = 0.81 in. (20.6), 12 Holes = 9.82 in. (249.5) = 10.00 in. (254.5)Other SpecificationsMade of 304 Stainless Steel

These are ASA 19.0 /ANSI 12 bored flanges, with no O-ring groove, and are not rotatable. These CNC lathe turned ASA/ANSI flanges are bored out for welding to tubing to make vacuum lines. Both sides of the flange are smooth. They are welded to tubing to make vacuum lines. ASA/ANSI flanges always mate an O-ring grooved flange with a smooth (non-grooved) flange to form a sealed connection with through-hole bolts, nuts, and washers. These flanges are made of 304 stainless steel. Dimensions, in. (mm): = 19.00 in. (482.60) = 17.00 in. (431.8) = 1.062 in. (27) = 1.00 in. (25.4) = 11.75 in. (298.5) = 12.00 in. (305.3)Other SpecificationsMade of 304 Stainless Steel