11-03-2008, 09:17 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Glendale,
AZ.
Cobra Make, Engine: Cobray-C3, The 60's body lines on todays chassis technology
Posts: 2,302
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Not Ranked
As you know pipe threads are a course and tapered thread with an increasing interference fit. If a softer material plug (like brass) is being inserted into a cast iron water pump that also helps it seal. Teflon tape installed correctly does seal if no issue with either the male or female side has burrs or defects. I like the Teflon paste because it is easier to make a clean and neat install for me anyway.
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