This Retaining Ring (Part #470016) is a small but essential hardware component for your Pfeiffer DUO vacuum pump . It measures 10 mm x 1 mm. A retaining ring, also known as a snap ring or circlip, fits into a groove on a shaft. Its job is to hold other components in place. It prevents parts from sliding off the shaft. This ensures stable and reliable pump operation . This retaining ring is designed specifically for the Pfeiffer DUO 10 and DUO 10C pump models . If you are rebuilding your pump, this is a part you may need.
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