130-BE013-C40

Beryllium viewport, consisting of:• Diffusion bonded 0.13mm thick beryllium window, over Ø39mm aperture, to a 2-3/4” = Ø69.85mm OD single-sided 304L stainless seel conflat flange (DN40CF)• Vacuum tight: part to be leak tight to 1 x 10^-9 atm-cm3/sec He• Material: beryllium, 99.0% beryllium assay minimum by specification• Diffusion bonded assemblies are guaranteed bakeable to +450°C• 2D eng. drawings to be provided for customer approval approximately 1-2 weeks after receipt of order• Beryllium is a strategic commodity that is controlled by the U.S. government for reasons of nuclear non-proliferation and anti-terrorism. Its ECCN no. is: 1C230.• Please note: end user statement must be supplied for export reasons. Export is restricted.