Use Annealed Copper Gaskets
Specifications
- Vacuum Leak Rate UHV <5x10-10 mbar l/s
 - Size or DN DN63CF (4 ½ " OD flange)
 - Compliance ISO 3669:2017
 - Vacuum Seal Cu Gasket
 - Body Material Stainless Steel 304
 - Temperature Range 200°C max 5°C per minute
 - Transmission 180-8000nm
 - Inside Diameter 48mm
 - Flatness λ/4 @632nm
 - Surface Finish 20-10 Scratch-dig
 - Optical Material MgF2
 
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