I have to respectfully disagree with you on this one. In a perfect world yes there would be no need of sealer when putting in o-rings. That is thier job to act as a seal. However when installing o-rings on a older vehicle there could irregularities on the surfaces do to corrosion or even scratches that will not allow the o-ring to seal properly. Instead of putting the whole waterpump back on installing the waterlines and then filling the system only to have it leak because of some pitting in the block or some other cause, I recommend putting a thin film of the blue RTV on the o-ring. This acts as cement to hold the o-ring in place while you are installing the pump (they fall out of that groove pretty easy otherwise) and also seals any irregularities that might be in the sealing surfaces. I call this cheap insurance. Please no flames. My asbestos suit is at the cleaners :) Ken Wilford Van-Again John 3:16 |
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