Pumps and Pump Casing Applications –
Ceramic Sealing Technology in Automotive Engineering
Switching to technical ceramics as the material used for seal rings and bearings in automotive and vehicle engineering brings numerous advantages. Excellent wear resistance, dimensional stability and a reduction in moving mass increase performance while simultaneously decreasing noise emission levels and extending the service life of all types of pumps in vehicles – for instance in coolant pumps, electronic fuel pumps or high-pressure pumps for diesel engines.
Technical ceramics also prove highly effective in pump casings and enclosures for magnetic clutch pumps without shaft seals. For some applications and under certain threshold constraints only leak-proof pumps such as magnetic clutch pumps that transmit drive power to the pump shaft without any contact can be employed.
Since the enclosure separates the outer and inner magnet assemblies, it must be constructed using a non-magnetic material such as plastic, stainless steel or ceramics. However, in many cases plastic lacks the necessary mechanical strength; the ceramic material silicon carbide easily outperforms both plastic and even stainless steel in terms of hardness, wear resistance, corrosion resistance and long service life.