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Rotor seal: vespel vs tefzel

http://www.chromforum.org/viewtopic.php?t=15247

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Rotor seal: vespel vs tefzel

Posted: Tue Jan 11, 2011 4:29 pm
by usuchrom
I want to know your opinion. I used to use vespel rotor seal for a rheodyne valve in a hplc semiprep. But I changed for a tefzel. I work in a range of pH between 2-8. But I see that the tefzel rotor seal lifetime is shorter than vespel. What is your experience?

Re: Rotor seal: vespel vs tefzel

Posted: Tue Jan 11, 2011 4:50 pm
by Consumer Products Guy
I believe Agilent states that Tefzel is more inert, but softer, and won't last as long as Vespel. We've used both. Currently, all ours are using Vespel.
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