Description
It’s a simple but precise part. Shaped like a flat ring, it sits in a designated groove or between two flat surfaces. When you tighten the assembly, this gasket gets compressed. This compression is what creates the seal.
Its job is crucial. It seals in the lubricating oil that keeps the pump running smoothly. Just as importantly, it seals out the surrounding air. Even a tiny air leak can make it hard for the pump to create a strong vacuum. This makes it work harder and less efficiently.
This specific part number (48407000) is the Busch gasket. It is made to the exact size and specification for your pump model. This guarantees it will fit perfectly and withstand the pump’s operating conditions.
Never reuse an old ring gasket. Once compressed, it loses its ability to seal properly again. Installing this new, factory-made gasket is the only way to ensure a reliable, long-lasting seal after maintenance.
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