1200 Series Quarternary Pump User Manual 59
Optimizing Performance
5
When to Use Alternative Seals
When to Use Alternative Seals
The standard seal for the pump can be used for most applications. However
applications that use normal phase solvents (for example, hexane) are not
suited for the standard seal and require a different seal when used for a longer
time in the pump.
For applications that use normal phase solvents (for example, hexane) we
recommend the use of the polyethylene seals, part number 0905-1420 (pack of
2). These seals have less abrasion compared to the standard seals.
Polyethylene seals have a limited pressure range 0–200 bar. When used above 200 bar their
lifetime will be significantly reduced. DO NOT apply the seal wear-in procedure performed
with new standard seals at 400 bar.
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