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Optimizing Performance
When to Use Alternative Seals
When to Use Alternative Seals
The standard seal for the quaternary 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 quaternary 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 s tandard seals.
NOTE 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.