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In neutron applications like the production of radioisotopes for medical imaging, aluminum vessels fitted with our flanges are replacing all stainless steel UHV systems— because residual, neutron induced, radiation in aluminum has a half-life orders of magnitude shorter than that of stainless steel. Our flanges enable aluminum UHV system use in cyclotrons and nuclear reactors.

Atlas Neutron Windows are an integrated Atlas CF flange with 316L sealing surface with an aluminum window—all in one flange body with no welding or connections. Standard windows are made from 6061 T6 aluminum machined to the thickness that you desire. Atlas offers engineering finite element analysis to assure you of the mechanical strength required. Dual neutron windows can offer an internal cavity that can be differential pumped or filled with a gas and analyzed through an array of optical ports mounted around the rim of the flange. All flanges are vacuum tested to a leak rate of 1×10-9 cc/sec of He prior to shipping.


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Size Size (metric) Size (code) Diagram A Diagram B Diagram C Diagram D Diagram E Holes Hole Diameter Part # Files Actions
2.125" 54mm 2.12 (54) 1.625 (41.3) 0.75 (19) 0.470 11.9 0.06 4 0.265 (6.7) CFNW-0213-01
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1.33" 34mm DN16 1.33 (34) 1.062 (27) 0.60 (15) .35 7.2 0.06 6 0.172 (4.4) CFNW-0133-01
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2.75" 70mm DN40 2.73 (69) 2.312 (58.7) 1.50 (38) 0.510 12.7 0.06 6 0.265 (6.7) CFNW-0275-01
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3.38" 87mm 3.37 (86) 2.850 (72.4) 1.75 (44) 0.620 15.7 0.06 8 0.332 (8.4) CFNW-0338-01
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4.50" 114mm DN63 4.47 (114) 3.628 (92.2) 2.50 (64) 0.750 19.0 0.06 8 0.332 (8.4) CFNW-0450-01
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4.62" 117mm 4.62 (117) 4.030 (102.4) 2.75 (70) 0.750 19.0 0.06 10 0.332 (8.4) CFNW-0463-01
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6.00" 152mm DN100 5.97 (152) 5.128 (130.3) 3.75 (95) 0.840 21.3 0.06 16 0.332 (8.4) CFNW-0600-01
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6.75" 171mm 6.75 (171) 5.969 (151.6) 4.87 (124) 0.840 21.3 0.06 18 0.332 (8.4) CFNW-0675-01
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8.00" 203mm DN160 7.97 (202) 7.128 (181.1) 5.75 (146) 0.880 23.9 0.08 20 0.332 (8.4) CFNW-0800-01
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10.00" 254mm DN200 9.97 (253) 9.128 (231.9) 7.75 (197) 0.970 24.6 0.12 24 0.332 (8.4) CFNW-1000-01
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12.00" 305mm 12.00 (305) 11.181 (284) 9.75 (248) 1.125 28.4 0.14 32 0.332 (8.4) CFNW-1200-01
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13.25" 336mm 13.25 (337) 12.058 (306.3) 10.02 (255) 1.125 28.4 0.14 30 0.390 (9.9) CFNW-1325-01
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14.00" 356mm 14.00 (356) 12.810 (325.4) 11.75 (298) 1.125 28.4 0.14 30 0.390 (9.9) CFNW-1400-01
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14.50" 368mm 14.50 (368) 13.310 (338.1) 11.75 (298) 1.125 28.4 0.16 32 0.390 (9.9) CFNW-1450-01
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16.50" 419mm 16.50 (419) 15.310 (389) 13.75 (349) 1.125 28.4 0.16 36 0.390 (9.9) CFNW-1650-01
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Category Name Per Pack Qty Part Number Actions
Gasket Mounting Hardware CFHW-0462-01
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Gasket Mounting Hardware CFHW-0462-02
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Bolt Mounting Hardware CFHW-0462-10
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Bolt Mounting Hardware CFHW-0462-11
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Bolt Mounting Hardware CFHW-0462-20
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Bolt Mounting Hardware CFHW-0462-21
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Gasket Mounting Hardware CFHW-0600-01
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Gasket Mounting Hardware CFHW-0600-02
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Bolt Mounting Hardware CFHW-0600-10
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Bolt Mounting Hardware CFHW-0600-11
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Bolt Mounting Hardware CFHW-0600-20
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Bolt Mounting Hardware CFHW-0600-21
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Gasket Mounting Hardware CFHW-0675-01
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Gasket Mounting Hardware CFHW-0675-02
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Bolt Mounting Hardware CFHW-0675-10
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Bolt Mounting Hardware CFHW-0675-11
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Bolt Mounting Hardware CFHW-0675-20
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Bolt Mounting Hardware CFHW-0675-21
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Gasket Mounting Hardware CFHW-0800-01
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Gasket Mounting Hardware CFHW-0800-02
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Bolt Mounting Hardware CFHW-0800-10
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Bolt Mounting Hardware CFHW-0800-11
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Bolt Mounting Hardware CFHW-0800-20
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Bolt Mounting Hardware CFHW-0800-21
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Gasket Mounting Hardware CFHW-1000-01
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Gasket Mounting Hardware CFHW-1000-02
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Bolt Mounting Hardware CFHW-1000-10
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Bolt Mounting Hardware CFHW-1000-11
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Bolt Mounting Hardware CFHW-1000-20
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Bolt Mounting Hardware CFHW-1000-21
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Gasket Mounting Hardware CFHW-1200-01
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Gasket Mounting Hardware CFHW-1200-02
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Bolt Mounting Hardware CFHW-1200-10
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Bolt Mounting Hardware CFHW-1200-11
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Bolt Mounting Hardware CFHW-1200-20
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Bolt Mounting Hardware CFHW-1200-21
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Gasket Mounting Hardware CFHW-1325-01
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Gasket Mounting Hardware CFHW-1325-02
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Bolt Mounting Hardware CFHW-1325-10
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Bolt Mounting Hardware CFHW-1325-11
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Bolt Mounting Hardware CFHW-1325-20
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Bolt Mounting Hardware CFHW-1325-21
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Gasket Mounting Hardware CFHW-1400-01
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Gasket Mounting Hardware CFHW-1400-02
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Bolt Mounting Hardware CFHW-1400-10
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Bolt Mounting Hardware CFHW-1400-11
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Bolt Mounting Hardware CFHW-1400-20
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Bolt Mounting Hardware CFHW-1400-21
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Gasket Mounting Hardware CFHW-1450-01
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Gasket Mounting Hardware CFHW-1450-02
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Bolt Mounting Hardware CFHW-1450-10
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Bolt Mounting Hardware CFHW-1450-11
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Bolt Mounting Hardware CFHW-1450-20
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Bolt Mounting Hardware CFHW-1450-21
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Gasket Mounting Hardware CFHW-1650-01
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Gasket Mounting Hardware CFHW-1650-02
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Bolt Mounting Hardware CFHW-1650-10
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Bolt Mounting Hardware CFHW-1650-11
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Bolt Mounting Hardware CFHW-1650-20
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Bolt Mounting Hardware CFHW-1650-21
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Gasket Mounting Hardware CFHW-0133-01
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Gasket Mounting Hardware CFHW-0133-02
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Bolt Mounting Hardware CFHW-0133-10
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Bolt Mounting Hardware CFHW-0133-11
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Bolt Mounting Hardware CFHW-0133-20
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Bolt Mounting Hardware CFHW-0133-21
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Gasket Mounting Hardware CFHW-0212-01
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Gasket Mounting Hardware CFHW-0212-02
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Bolt Mounting Hardware CFHW-0212-10
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Bolt Mounting Hardware CFHW-0212-11
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Bolt Mounting Hardware CFHW-0212-20
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Bolt Mounting Hardware CFHW-0212-21
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Gasket Mounting Hardware CFHW-0275-01
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Gasket Mounting Hardware CFHW-0275-02
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Bolt Mounting Hardware CFHW-0275-10
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Bolt Mounting Hardware CFHW-0275-11
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Bolt Mounting Hardware CFHW-0275-20
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Bolt Mounting Hardware CFHW-0275-21
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Gasket Mounting Hardware CFHW-0337-01
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Gasket Mounting Hardware CFHW-0337-02
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Bolt Mounting Hardware CFHW-0337-10
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Bolt Mounting Hardware CFHW-0337-11
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Bolt Mounting Hardware CFHW-0337-20
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Bolt Mounting Hardware CFHW-0337-21
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Gasket Mounting Hardware CFHW-0450-01
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Gasket Mounting Hardware CFHW-0450-02
Add
Bolt Mounting Hardware CFHW-0450-10
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Bolt Mounting Hardware CFHW-0450-11
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Bolt Mounting Hardware CFHW-0450-20
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Bolt Mounting Hardware CFHW-0450-21
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