3MTape Primer 94 1/2 Pint 8oz For Vinyl Di-Noc

Primer 94 is a clear thin liquid primer sold in 1/2 pint cans at $20 (which is very high priced). I did have Very good ADHESION with 3M Dual Lock Fasteners on 12 aluminum window frames, along with 12 polycarbonate hurricane panels primed with "94" for the 3M fasteners on them as well. It does go a long way however, and only took three 1/2 pint cans for both the windows as well as the poly panels. Great primer, works well, but just a bit high priced.

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(Duplicate review to the one for the VHB 4950)I contacted 3M and asked which VHB tape to use for installing solar panels (aluminum brackets) to the roof of an RV (fiberglass). They recommended VHB 4950 along with 3M Tape Primer 94. The primer is a lot more expensive than the tape but since I didn't want my panels flying off at 60 mph, it was a worthwhile expense. Simple to install (clean with alcohol, apply primer, apply tape, apply force while it cures) and it sticks with a vengeance. It definitely doesn't allow for do-overs so make sure you get it right the first time.As a final extra measure, I applied Eternabond tape on top of the bracket to prevent water, ice, dust and dirt from working their way under and as extra support. I can honestly say that the roof of the RV will probably come off before the panels do.

I had bought some EVA foam for use as traction foam on my two kayaks. The directions that came with the foam recommended this product and I'm glad I used it. I applied two coats of the primer before applying foam to it. So far it has held up very well. I didn't want the foam to delaminate from being in the 105 degree hot sun for hours on end, and this seems to have done the trick.10/10 would recommend for any foam used in a marine environment.Applied in 2023, hasn't even begun to come off in 2025 even being stored outside. Absolutely recommend.

Worked great but, just a couple of notes. This product worked just fine and as described. I used it to help seal the edges of a vinyl wrap on some motorcycle parts that had tons of funky curves and angles. It helped tremendously. When the little can arrived, it has a lift lid like a paint can. I want to mention, I used the product straight from the can rather than pouring it into something. It worked fine, but I will say that after sitting open for hours while I worked, I did notice that there seemed to be a decent amount of evaporation. I only note this because if you have a great deal of area to use it on you might want to keep that in mind. As, I believe, others have noted, there is a fair amount of odor, so use in a decently ventilated area. On the whole, very pleased and will use again.

Fixes corners or any adhesion areas flawlessly on vinyl or tint.

Mainly used this with 3m tape for helmet intercoms and cameras stuck to the side of my helmet. Not once has it peeled back and when taken off it cleans up as if it was never there.(aside from the like new finish next to the sun bleached finish.. Job well done)Less is more when using it and a small paint brush lays it on nicely. If you can use tape as an outline/over splash otherwise a little alcohol and some q-tips work well cleaning up over applied areas. If you don't clean it up after it WILL attacked dirt like crazy but that is expected with any adhesive type application. It's a once shot deal though. Do not pull up your project and try to adjust it. If you need to adjust clean up all the primer and lay down another thin coat. I've used it on helmet cam mounts. GoPro and Sena. Has not moved even after heavy rain. Used it on Hook and latch tape on the back of my computer to mount external HDs that get removed often. Outlasted the tape! Any project that includes tape or vinyl like applications this is my go to primer. REMEMBER to wipe the lid and can or it will gum up after a while and make sure the top is on every time. I kept using the white ring and I still have some left.

I used this to help the 3M tape on my Charger rear window louvers. This helped the tap adhere much stronger. It takes a lot of pulling force to even get the louvers to begin to pull up. Would recommend this to anyone looking to use 3m tape.