This is the Exhaust Box Gasket for Becker vacuum pumps (Part #300237) . It creates a tight seal on the exhaust box to stop air and gas from leaking out. A bad exhaust gasket causes hissing sounds, pressure loss, and poor pump performance. This gasket fits Becker U5 Series pumps, specifically the U5.165 and U5.200 models . Replace it today and get your pump working right again.
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