Shroud application in magnetic clutch pumps without shaft seals
Threshold constraints may mean that only leak-free pumps can be employed in some applications. In such situations one of the options is the magnetic-clutch pump by which drive power is transmitted to the pump shaft without any contact. The pump housing is separated by the so-called shroud, located between the outer and inner magnet ring, and which has to consist of a non-magnetic material such as stainless steel, plastic or ceramic. However, the plastic version in most cases does not feature the necessary mechanical strength.
Shrouds constructed from silicon carbide are much harder and wear resistant, even when compared with stainless steel, and additionally, are remarkable for their extreme corrosion resistance and long service life.