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I need to replace the mechanical waterpump seal on my 95 AC Cougar.
Do I need to grease that up or does it run dry? There is a springloaded rubber seal that makes contact with what looks like a nylon washer on the back of the impeller. Also should I put some rtv on the seal before I press it in?
 

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No it is a dry pressed in seal, the new will have a loctite coating. Be sure to get it all the way seated and flush! The back of the impeler is ceramic.
 
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