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Avoiding contamination by “lift-off” mechanical seal

In the field of mechanical and thermal separation, the HEINKEL Group often uses mechanical seals besides shaft seals and stuffing boxes. For the manufacturing of API (Active pharmaceutical ingredients) and fine chemicals, usually non contacting, gas lubricated (lift-off) mechanical seals are used. In the field of horizontal dryers, this solution which prevents cross contamination is increasingly applied by COMBER customers who prefer inert gases as a lubricant.