PSI roots blower case Buna O-ring 6-71 thru 14-71. RBS carries a full line of parts to service your PSI roots supercharger. Here is one part you should have a few of if you service your own blower.
These O-rings seal the bearing plate front and rear to the blower case. Made from Buna rubber these O-rings will withstand fuel and oil with no issues.
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