3M Scotch-Weld Plastic & Rubber Instant Adhesive PR40, Clear, 20 Gram

After a lot of research I bought this glue to repair some tennis shoe soles that had started to come loose. I looked at lots of glues - instant, contact, two-part, etc., and eventually landed on this one. It is one of the more expensive adhesives, and it comes in a very plain, industrial-looking plastic container, no animals, colors or pretty pictures on the bottle, and in a plain cellophane wrap, but does it work?You bet it does. I can't quite believe the level of bond I got on rubber to rubber, it's amazing. There is absolutely no give, no sign of the edge coming loose again, it's very solid. At the price, I can see why you'd have reservations, so go ahead buy a cheaper one and be frustrated when it's not quite as good as you need. Then buy this one. I've been there. I write some reviews but not many, however this product got my attention and if you want something that works, get your wallet out, but this works.One more important "health and safety" thing. The small-print is *small* - it's really tiny, I used a loupe to read it. But definitely read it. My inner five year old came out and I smelled the glue while it was wet. REALLY BAD IDEA. Don't do that. It doesn't just smell bad, it smells dangerous. It made me physically recoil and it took a while for the weird feeling in my nose to go away, so don't smell it, and keep the product locked away from the wee ones. That's all. Great glue, easily worth the money.

This glue is better than any other glue I’ve used

This adhesive worked great for my project which was to bond some 3D printed (PLA) items to polyethylene (HDPE). After 24 hours of curing the two items were bonded together as if they were one. There was a lot of surface area for the connection that I was bonding so perhaps my situation was optimal for this product but I couldn't be happier with the result. There's not a lot of instructions included, so it might be helpful to know how I used the product:- I started with both surfaces to be bonded in a horizontal position. The adhesive (and the primer are very thin and runny and this is the only way to minimize the mess.- I masked off the non-bonding areas with blue painters tape to further reduce mess.- I first primed the pieces by brushing the entire (cleaned) area for be bonded with acetone. Acetone is cheap and I had some (from Home Depot) so I decided to try it as an alternative to the expensive but official 3M primer.- I applied a thin layer of adhesive to the HDPE side, spreading it about a bit with a wooden stir stick.- I joined the pieces, clamped them together and carefully wiped away the excess with a paper towel. Note that the bonding is not immediate. Out of an abundance of caution I left the clamps on for 24 hours.Maybe another process would work as well, but that worked great for me. You end up using a very small amount of adhesive so the little bottle goes farther than you might think. To be honest I had serious doubts that anything would work to bond HDPE, and was amazed at how well it ended up working. Good luck!

3M Scotch-Weld Plastic & Rubber Instant Adhesive PR40, Clear, 20 GramI bought a bottle back in 2024 when the price was $13.96. Used a little bit then when I went back for more found it had hardened in the bottle. Checked the price for a new bottle but it was over 30 bucks. With nothing to lose, I put acetone in the bottle and forgot about it. Now, a few months later, checked it and it has turned back to a liquid, albeit much thicker than it originally was. I'm going to put some more acetone in there and thin it out. Note that acetone = nail polish remover so you might have it already.

A very good adhesive. It's super glue on steroids !!

I bought this because of all the reviews and a YouTube video of people gluing tires back together. Well I either did it wrong or it doesn't work very well for that I don't know. Had a stob stick through my tractor tire and I could push the rubber back together making it almost impossible to see. After booting it and patching the tube I had already cleaned out any dirt in the hole and scuffed it the best I could without enlarging it. I glued it up and everything looked good however the hole was back within 30 minutes of light use. Anyway since I had glue in hand and broken stuff is plentiful around my shop I went to gluing everything I thought it could possibly work on. It definitely works for what it's advertised to do, and I don't remember seeing putting tires back together anywhere in the description so I can't really complain about that. Just felt I would include my experience for anyone else that saw the same reviews or video and take it for what what it's worth. I'm sure I'll try it again and if I get a different result I'll update this, but with destructive kids I'm sure I'll get my money's worth out of it.

Glue seems to work well on polyethylene and polypropylene. You do need to thoroughly clean with the natured alcohol to remove any signs of grease or oil. Also, parts must fit together well. Rating three stars only because the bottle shipped to me has only four months of shelf life remaining. According to 3M the product can be used for at least 15 months after manufacturing date. So, I was shipped a rather old bottle, and for over $20, This is a bit frustrating.

This stuff is absolutely amazing! Heck, I am writing a review about "glue!"I was a bit skeptical to say the least, but I am simply blown away how well this works! It takes a bit longer to dry and cure (this just depends on amount used is all, it can dry well within a minute). I use this everywhere now and on most things that need some fixing.*Depending where you want to apply this, I would use some/little rubbing alcohol to prep and clean the surface a bit before applying this stuff.Honestly, I will not buy anymore lame "super glue" after using this product by 3M.

Works great for nitrile o-ring cord

Compré este producto para unir una pieza rota de plástico, yo ya había tratado de utilizar kola loca y no me funcionó, pensé que esto tampoco funcionaría porque huele igual que la kola loca, pero lo dejé secar dos dias y al revisar la pieza estaba bien unida, así que si funciona, solo queda un poco de mancha opaca al secar el pegamento, definitivamente es más potente que otros pegamentos, hay que tener paciencia, poner suficiente producto y dejar secar sin mover por varias horas

Excelente producto, es necesario dejarlo secar por unas horas y si se deja más de 12 alcanza su máximo desempeño. Hasta ahora lo he usado en plásticos y considero que mucho mejor que la Kolaloca , como siempre 3M es excelente en sus productos

Worked excellent for my project

No funcionó para lo que la requeri.