Bored Conflat Flange, CF 1-1/3 inch, Bored 1/8 in, 6 Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These are Bored Conflat Flange, CF 1-1/3 inch, Bored 1/8 in, Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 1-1/3 inch, Bored 1/8 in, 6 Tapped Bolt Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel CF Flange Size: CF 1 1/3, 1.33 inch Common Dimensions: Flange Size OD = 1 1/3 (A)=1 1/3 (33.70mm) (B)=1/8 (3.175mm) (C)=NA (D)=5/16 (7.60mm) (E)=1 1/16 (27mm)

Bored Conflat Flange, CF 1-1/3 inch, Bored 3/8 in, 6 Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These are Bored Conflat Flange, CF 1-1/3 inch, Bored 3/8 in, Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 1-1/3 inch, Bored 3/8 in, 6 Tapped Bolt Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel CF Flange Size: CF 1 1/3, 1.33 inch Common Dimensions: Flange Size OD = 1 1/3 (A)=1 1/3 (33.70mm) (B)=3/8 (9.65mm) (C)=NA (D)=5/16 (7.60mm) (E)=1 1/16 (27mm)

Bored Conflat Flange, CF 1-1/3 inch, Bored 1/2 in, 6 Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These are Bored Conflat Flange, CF 1-1/3 inch, Bored 1/2 in, Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 1-1/3 inch, Bored 1/2 in, 6 Tapped Bolt Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel CF Flange Size: CF 1 1/3, 1.33 inch Common Dimensions: Flange Size OD = 1 1/3 (A)=1 1/3 (33.70mm) (B)=1/2 (12.83mm) (C)=NA (D)=5/16 (7.60mm) (E)=1 1/16 (27mm)

Bored Conflat Flange, CF 1-1/3 inch, Bored 3/4 in, 6 Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These are Bored Conflat Flange, CF 1-1/3 inch, Bored 3/4 in, Tapped Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 1-1/3 inch, Bored 3/4 in, 6 Tapped Bolt Holes, Non-Rotatable, 1.33 inches CF-F, Stainless Steel CF Flange Size: CF 1 1/3, 1.33 inch Common Dimensions: Flange Size OD = 1 1/3 (A)=1 1/3 (33.70mm) (B)=3/4 (19.30mm) (C)=5/8 (16mm) (D)=5/16 (7.60mm) (E)=1 1/16 (27mm)

Bored Conflat Flange, CF 2 1/8 inch, Bored 1 in, 4 Tapped Holes, Non-Rotatable, 2.125 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 2 1/8 inch, Bored 1 in, Tapped Holes, Non-Rotatable, 2.125 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 2 1/8 inch, Bored 1 in, 4 Tapped Bolt Holes, Non-Rotatable, 2.125 inches CF-F, Stainless Steel CF Flange Size: CF 2 1/8, 2.125 inch Common Dimensions: Flange Size OD = 2 1/8 (A)=2 1/8 (53.80mm) (B)=1 (25.65mm) (C)=15/16 (23.90mm) (D)=1/2 (11.90mm) (E)=1 5/8 (41.28mm)

Bored Conflat Flange, CF 2 3/4 inch, Bored 3/4 in, 6 Tapped Holes, Non-Rotatable, 2.750 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 2 3/4 inch, Bored 1 in, Tapped Holes, Non-Rotatable, 2.750 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 2 3/4 inch, Bored 3/4 in, 6 Tapped Bolt Holes, Non-Rotatable, 2.750 inches CF-F, Stainless Steel CF Flange Size: CF 2 3/4, 2.750 inch Common Dimensions: Flange Size OD = 2 3/4 (A)=2 3/4 (69.30mm) (B)=3/4 (19.10mm) (C)=11/16 (15.75mm) (D)=9/16 (12.70mm) (E)=2 5/16 (58.72mm)

Bored Conflat Flange, CF 2 3/4 inch, Bored 1 in, 6 Tapped Holes, Non-Rotatable, 2.750 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 2 3/4 inch, Bored 1 in, Tapped Holes, Non-Rotatable, 2.750 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 2 3/4 inch, Bored 1 in, 6 Tapped Bolt Holes, Non-Rotatable, 2.750 inches CF-F, Stainless Steel CF Flange Size: CF 2 3/4, 2.750 inch Common Dimensions: Flange Size OD = 2 3/4 (A)=2 3/4 (69.30mm) (B)=1 1/8 (28.20mm) (C)=1 (25mm) (D)=9/16 (12.70mm) (E)=2 5/16 (58.72mm)

Bored Conflat Flange, CF 2 3/4 inch, Bored 1.50 in, 6 Tapped Holes, Non-Rotatable, 2.750 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 2 3/4 inch, Bored 1.50 in, Tapped Holes, Non-Rotatable, 2.750 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 2 3/4 inch, Bored 1.5 in, 6 Tapped Bolt Holes, Non-Rotatable, 2.750 inches CF-F, Stainless Steel CF Flange Size: CF 2 3/4, 2.750 inch Common Dimensions: Flange Size OD = 2 3/4 (A)=2 3/4 (69.30mm) (B)=1 1/2 (38.35mm) (C)=1 7/16 (36.60mm) (D)=9/16 (12.70mm) (E)=2 5/16 (58.72mm)

Bored Conflat Flange, CF 3 3/8 inch, Bored 2.00 in, 8 Tapped Holes, Non-Rotatable, 3.375 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 3 3/8 inch, Bored 2.00 in, Tapped Holes, Non-Rotatable, 3.375 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 3 3/8 inch, Bored 2.00 in, 8 Tapped Bolt Holes, Non-Rotatable, 3.375 inches CF-F, Stainless Steel CF Flange Size: CF 3.3/8, 3.375 inch Common Dimensions: Flange Size OD = 3 3/8 (A)=3 3/8 (85.30mm) (B)=2.00 (51mm) (C)=1 15/16 (49.30mm) (D)=11/16 (17.40mm) (E)=2 13/16 (72.39mm)

Bored Conflat Flange, CF 4 1/2 inch, Bored 2.50 in, 8 Tapped Holes, Non-Rotatable, 4.50 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 4 1/2 inch, Bored 2.50 in, Tapped Holes, Non-Rotatable, 4.50 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 4 1/2 inch, Bored 2.50 in, 8 Tapped Bolt Holes, Non-Rotatable, 4.50 inches CF-F, Stainless Steel CF Flange Size: CF 4 1/2, 4.50 inch Common Dimensions: Flange Size OD = 4 1/2 (A)=4.50 (113.50mm) (B)=2.50 (63.75mm) (C)=2 7/16 (62mm) (D)=11/16 (17.40mm) (E)=3 5/8 (92.15mm)

Bored Conflat Flange, CF 4 5/8 inch, Bored 3.00 in, 10 Tapped Holes, Non-Rotatable, 4.625 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 4 5/8 inch, Bored 3.00 in, Tapped Holes, Non-Rotatable, 4.625 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 4 5/8 inch, Bored 3.00 in, 10 Tapped Bolt Holes, Non-Rotatable, 4.50 inches CF-F, Stainless Steel CF Flange Size: CF 4 5/8, 4.625 inch Common Dimensions: Flange Size OD = 4 5/8 (A)=4.625 (117mm) (B)=3.00 (76.45mm) (C)=2 15/16 (74.70mm) (D)=9/16 (20.60mm) (E)=4 1/16 (102.36mm)

Bored Conflat Flange, CF 6 inch, Bored 4.00 in, 16 Tapped Holes, Non-Rotatable, 6.00 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 6 inch, Bored 4.00 in, Tapped Holes, Non-Rotatable, 6.00 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 6 inch, Bored 4.00 in, 16 Tapped Bolt Holes, Non-Rotatable, 6.00 inches CF-F, Stainless SteelCF Flange Size: CF 6 inch Common Dimensions: (A) = 6.0 (152.4mm) (B) = 4.00 (101.85mm) (C) = 3 15/16 (99.60mm) (D) = 3/4 (19.80mm) (E) = 5 1/8 (130.25mm)

Bored Conflat Flange, CF 6 3/4 inch, Bored 5.00 in, 18 Tapped Holes, Non-Rotatable, 6.75 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 6 3/4 inch, Bored 5.00 in, Tapped Holes, Non-Rotatable, 6.75 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 6 3/4 inch, Bored 5.00 in, 18 Tapped Bolt Holes, Non-Rotatable, 6.75 inches CF-F, Stainless Steel CF Flange Size: CF 6 3/4 inch, 6.75 inch Common Dimensions: Flange Size OD = 6 3/4 (A)=6 3/4 (171mm) (B)=5.00 (127.85mm) (C)=4 7/8 (123.8mm) (D)=13/16 (21.34mm) (E)=6.00 (151.61mm)

Bored Conflat Flange, CF 8 inch, Bored 6.00 in, 5/16-20 Tapped Holes, Non-Rotatable, 8.00 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 8 inch, Bored 6.00 in, 5/16-20 Tapped Holes, Non-Rotatable, 8.00 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 ("mini conflat"), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 8 inch, Bored 6.00 in, 5/16-20 Tapped Bolt Holes, Non-Rotatable, 8.00 inches CF-F, Stainless SteelCF Flange Size: CF 8 inch, 8.00 inchCommon Dimensions: Flange Size OD = 8.00"(A)=8.00" (202mm) (B)=6.00" (153mm) (C)=5-7/8" (150mm) (D)=7/8" (22.35mm) (E)=7 1/8" (181mm)

Bored Conflat Flange, CF 10 inch, Bored 8.00 in, 24 Tapped Holes, Non-Rotatable, 10.00 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 10 inch, Bored 8.00 in, Tapped Holes, Non-Rotatable, 10.00 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 10 inch, Bored 8.00 in, 24 Tapped Bolt Holes, Non-Rotatable, 10.00 inches CF-F, Stainless Steel CF Flange Size: CF 10 inch, 10.00 inch Common Dimensions: Flange Size OD = 10.00 (A)=10.00 (254mm) (B)=8.00 (204mm) (C)=7 7/8 (200mm) (D)=1 (24.60mm) (E)=9 1/8 (232mm)

Bored Conflat Flange, CF 12 inch, Bored 10.00 in, 32 Tapped Holes, Non-Rotatable, 12.00 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 12 inch, Bored 10.00 in, Tapped Holes, Non-Rotatable, 12.00 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 12 inch, Bored 10.00 in, 32 Tapped Bolt Holes, Non-Rotatable, 12.00 inches CF-F, Stainless Steel CF Flange Size: CF 12 inch, 12.00 inch Common Dimensions: Flange Size OD = 12.00 (A)=12.00 (304mm) (B)=10.00 (254mm) (C)=9 7/8 (251mm) (D)=1 (26mm) (E)=11 1/8 (283mm)

Bored Conflat Flange, CF 13 1/4 inch, Bored 10.00 in, 30 Tapped Holes, Non-Rotatable, 13.25 inch CF-F, Stainless Steel. These are Bored Conflat Flange, CF 13 1/4 inch, Bored 10.00 in, Tapped Holes, Non-Rotatable, 13.25 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH. Bored Conflat Flange, CF 13 1/4 inch, Bored 10.00 in, 30 Tapped Bolt Holes, Non-Rotatable, 13.25 inches CF-F, Stainless Steel CF Flange Size: CF 13 1/4 inch, 13.25 inch Common Dimensions: Flange Size OD = 13 1/4 (A)=13.25 (335mm) (B)=10.00 (254mm) (C)=9 7/8 (251mm) (D)=1 1/16 (29mm) (E)=12 (306mm)

Bored Conflat Flange 14 Inch, Bored 12 inch Through Holes, Non- Rotatable. Stainless Steel These are Bored Conflat Flange, CF 14 inch, Bored 12 in, Tapped Holes, Non-Rotatable, 14 inches CF-F, Stainless Steel. These flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 ("mini conflat"), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. Sold as ONE EACH.Bored Conflat Flange, CF 14 inch, Bored 12 in, 30 Tapped Bolt Holes, Non-Rotatable, 14 inches CF-F, Stainless SteelCF Flange Size: CF 14 inch, 12 inchCommon Dimensions: Flange Size OD = 14"(A)=14.00(B)=12.00"