You can get a 'generic' brand for a fraction of the price from I believe - I have tested and tested that stuff against the 3m and there is no difference except the price. There are a lot of good 2 part epoxies out there - I have worked with a lot of various types and have found a go to for me is 3M DP 420 which I used for underwater robotics systems. For sealing and creating a barrier on the fasteners and the L bracket to the PM 3M 5200 fast cure with UV stabilizers will definitely do the trick. you can create a barrier between that and the panel using Tefgel or you can buy a small sheet of silicone on Amazon to keep the SS 316 and the panel metal from reacting with each other. Also that L bracket should be of similar grade of the SS 316. You will want to keep a barrier between the promaster metal and the fastener. Most marine supply stores will have this grade of alloy. If you are wanting to secure something like solar panels, if it were me I would use a mechanical type fastener, good quality Stainless Steel 316 not from home depot but the real good stuff. I have found that it may feel not like it is that secure or sticking, if you give it time 24 hours without disturbing it it will be a lot more secure after that timeframe. Fail is a bad word - like others every product has its limitations and applications that are reasonable so it is more often than not - not saying that in your case - but very few products I have used failed - I just failed to read the instructions - I do read them all the time now. I would personally not use it for anything you need it to absolutely must have it not come off or fail. I have found it is good for certain applications. I use it quite a bit for various applications in my line of work military vessels, conduit in some cases, led lighting strips. They have a product called "Primer 94" that could be applied to the plastic surface first and then a product like 5952 could be used to stick to the Primer 94 and a strong bond can be made. 5952 is better for plastics.ĥ) While I was not sticking something to plastic this time, we diverged and talked about how it's hard (near impossible) to stick something to HDPE. 4941 is in the VHB family and could be called VHB (though the box doesn't actually say this).Ĥb) 49 are not the same. He said that if I need a small amount of strong tape, then I should use 4941. This is the product that I'm familiar with (and that I did buy at a home renovation store) that has the homogenous layer of what appears to be butyl tape. I had mentioned that I could not find VHB at the usual big stores and he said that for consumers, they have a product called 4941 Extreme Mounting tape. Here's what the very helpful fellow at their Industrial products (1-80) said:ġ) the 5952 3M VHB product is indeed a product with adhesive on both sides of a foam-like substrate the adhesive is infused and should not separateĢ) the fact that I peeled it off fairly quickly after attaching meant that it had not achieved full strength, which needs 72 hours to "cure".ģ) 5952 has an expiration time (we didn't fully pin down a date) and one explanation could have been that it was old product-or indeed it might have been an illegitimate clone-but the way I used itĬould have caused the result that I observed (i.e., I didn't use it quite right).Ī few other things I found chatting with him noting it for future reference:Ĥ) "3M VHB" is a brand name that applies to a variety of high-strength tapes. Thanks for the note and did call up 3M just now to find out more.
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