From my experience, you should still reheat the new butyl tape @ 265F for 7 minutes.
Quote:
Originally Posted by Ben_G
So after I split the housing, I used a heat gun to help with removing ALL the old sealant. I bought a roll of the 3M butyl tape and rolled a new bead in when it was time to close up the headlights. It was soft and pliable, so I didn't need to heat it up. Guaranteed a watertight fit using the new seal.
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