Gastight permanent magnetic coupling with ball bearing encapsulated in ceramics, square connection for cardan joint and flange NW 25. All products which are exposed to the medium do not contain any metals. The 8 mm shaft guide provides guidance without friction of stirrer shafts up to a speed of 800 rpm. The stirrer head can also be fixed directly into the chuck by mounting the included metal adaptor on the square connection (6 mm). Universal chemical resistance, since the product is only exposed to PTFE and PFA. Torque Ncm 60, Flange NW 25, Viscosity up to mPas 3.500, Volume up to ml 6.000, Bolt circle dia. (A) mm 75, Bore dia. (B) mm 9, Length mm 215