Rotor Seal, Vespel, Rheodyne 7725i

There are so many different components to various lab equipment and instruments. So many that it’s of the utmost importance to replace any seals, filters or other essential spare parts only with what’s recommended for your system. In the case of the Rheodyne 7725i Sample Injector, there’s a series of seals that may need to be replaced over time due to wear and use. That seal is the Rotor Seal, which is a Vespel-type seal that enables the sample injector to make a flow path between the adjacent stator ports. This crucial seal is Vespel-style, which means it has grooves or holes to allow for the flow of whichever sample mixture you’re working with. At Waters, we care deeply about providing you with the spare parts that are designed specifically for the system you’re using, and we’re happy to provide this Rotor Seal that will directly fit on the Rheodyne 7725i Sample Injector. Add the Rotor Seal to your lab’s procurement list, or simply order your own and have it delivered right to the lab.

The Rheodyne 7725i Sample Injector is a crucial component to any workflow, but especially if you want to avoid flushing the sample loop after each injection. That’s because this injector removes the need for constant flushing, unless you are performing trace analysis. You can even inject a sample from a partially filled sample loop with this injector. What’s most important to note is that the Vespel-type Rotor Seal in the injector is responsible for opening a flow path between the adjacent stator ports. If for any reason that seal becomes worn, it could be distributing the sample incorrectly. That’s why we’re happy to provide this Rotor Seal, as it’s designed for direct fitment on the Rheodyne 7725i Sample Injector.

While you’re servicing the Rheodyne 7725i Sample Injector, take a look at the compression screw. If you see any sort of wear on it, we recommend replacing it with the Rheodyne Compression Screw. This screw is also designed for direct fitment on the Rheodyne 7725i Sample Injector and is a crucial component that exerts compression where needed.

Ready to check out with the Vespel-type Rotor Seal for the Rheodyne 7725i Sample Injector?
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