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1975 911S o ring


Vehicle Information: Model: 911 S; Year: 1975; Body Type: Targa; Total Mileage: 115000;

I am rebuilding the engine and found the o rings on the crank case through bolts nibble and the o ring material get extruded out from under the washer during torquing the bolt. I have replaced them with a standard US flourosilicone o ring with a 0.070 inch diameter. they still seem to get a good squeeze without the extrusion. Will this work?thanks

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