These are ASA 4.25 / ANSI 1 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 4.25 in. (108) = 3.125 in. (79.4) = 0.50 in. (12.7) = 0.625 in (15.8), 4 Holes = 2.21 in. (56.13) = 2.40 in. (60.96)

These are ASA 5.0 / ANSI 1.5 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 5.00 in. (127) = 3.875 in. (98.44) = 0.50 in. (12.7) = 0.625 in. (15.8), 4 Holes = 2.66 in. (67.56) = 3.15 in. (80) Other Specifications:

These are ASA 6.0 / ANSI 2 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 6.00 in. (152.4) = 4.75 in. (120.6) = 0.50 in. (12.7) = 0.75 in (19), 4 Holes = 3.60 in. (91.44) = 3.96 in. (100.58)

These are ASA 7.5 / ANSI 3 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 7.50 in. (190.50) = 6.00 in. (152.4) = 0.50 in. (12.7) = 0.75 in. (19), 4 Holes = 4.56 in. (115.82) = 5.15 in. (130.81)

These are ASA 9.0 / ANSI 4 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 9.00 in. (228.6) = 7.50 in. (190.5) = 0.50 in. (12.7) = 0.75 in. (19), 8 Holes = 6.13 in. (155.7) = 6.65 in. (168.91)

These are ASA 11.0 / ANSI 6 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 11.00 in. (279.4) = 9.50 in. (241.3) = 0.75 in. (19) = 0.81 in. (20.6), 8 Holes = 8.15 in. (207.01) = 8.58 in. (217.93)

These are ASA 16.0 / ANSI 10 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 16.00 in. (406.4) = 14.25 in. (362) = 0.75 in. (19) = 0.81 in. (20.6), 12 Holes = 12.12 in. (307.85) = 13.35 in. (339.09)

These are ASA 13.50 / ANSI 8 blank rotatable flanges without O-ring groove. They are made of 304 stainless steel. These CNC lathe turned flanges have a two piece design and both sides of the flange are smooth. The center insert makes the vacuum seal when the rotatable bolt ring is tightened against a mating flange. They are often used to cover ASA/ANSI ports. 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. Dimensions, in. (mm): = 13.50 in. (342.9) = 11.75 in. (298.5) = 0.75 in. (19) = 0.81 in. (20.6), 8 Holes = 10.34 in. (262.64) = 10.84 in. (275.34)