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Yes, you should. Maine Sail who started this thread, sells it on his website. The link is in the OP. Not only are you assured of getting the proper quality, but I think he deserves the business for having provided the free value of the instruction in this thread.

I've purchased several rolls from him. I admit, I did purchase some hardware store variety to make a temporary sticky plug that I could remove on a project. It was intentional to have something cheap and disposable. It was clearly an inferior product.
I agree. I had bought some butyl tape from an RV store (on Amazon, I think) and it was kind of OK. Then I bought from MaineSail and I much prefer that one. A roll lasts a long time but when I run out I will surely buy from him again.
 

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In Maine's description of how to use the butyl tape to bed hardware, he points out not to turn the bolts when tightening the nuts. What if the bolts screw into a backing plate and there is no choice but to turn them? Is butyl still recommended in that case? Background: I need to rebed a couple of stanchions that are attached with bolts that screw into backing plates that seem to be embedded in fiberglass. Thanks -
 

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Discussion Starter #443
In Maine's description of how to use the butyl tape to bed hardware, he points out not to turn the bolts when tightening the nuts. What if the bolts screw into a backing plate and there is no choice but to turn them? Is butyl still recommended in that case? Background: I need to rebed a couple of stanchions that are attached with bolts that screw into backing plates that seem to be embedded in fiberglass. Thanks -
Make the "cones" a bit longer, really knead them into the threads and tighten slowly....
 

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What is the "best practice" for installing Beckson Deck plates? I don't know if they're ABS or Polypropylene plastic or ???

Can I use Bed-it butyl with Beckson Deck Plates? They are on the top of the amas (floats) on my Trimaran. The prior owner used some kind of silicone sealant, which didn't adhere to the trim ring at all.

Thanks.

 

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al brazzi
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I would use a non hardening caulk like lifecaulk, you absolutely done need 4200 or god forbid 5200 3M but there are lots of non silicone marine caulks available. Butyl requires you "squish" some out while tightening so its not suitable for softer fittings such as this.
 
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