100PCS Solder Seal Wire Connector Waterproof

At the very beginning it was very difficult to make this work... I used a lighter, heatgun, torch, soldering iron, and nothing seamed to work .. it will shrink the tube and seal it but the metal wouldn’t melt unless if you would melt the plastic with it .... meaning the tube Burt to an extreme that it became useless.... so after practicing with half of the quantities that arrived in the box I learned that using a lighter is way better than using anything else I mentioned above, but you still have to put the tip of the lighter flame about 2”-3” away from the middle part and eventually it will do it’s job, be patient and rotate the wire only after the first stage of the shrink tube actually shrinks to distribute the heat all around and you will notice the solder to begin melting and spreading out ... once it begins spreading out give it maybe another 5 seconds on the flame while rotating and if everything didn’t melt and you still see a part of the metal formed as a ring leave it as you will never get that to melt unless if the plastic starts burning or worse the actual wire.. then your toast!! So if you see that the shrink is getting black using a lighter that only means that you have the flame touching the shrink tube and your way to close... don’t let the flame touch the plastic keep away from it ... if you use that lighter and place your finger 1 feet above that flame you probably won’t feel the heat but the lower you get the hotter it gets... 2-3” away from the plastic is enough to melt the plastic first and then the metal.... it takes practice like everything else ...To the guy that compared this to a carpenter hammering finishing nails with a mag light .... it’s not the proper tool for the job and I get that....but it can be done if that’s all you have available.....man when I was younger like 10-12 yrs old and couldn’t afford anything, I would hammer nails with my moms heels and a spoon for more hammering area... so anything is possible ..... the key is not to loose patience and don’t let the world close on you ....🤦‍♂️🤦‍♂️🤦‍♂️🤦‍♂️

Waited to get this to do a repair on my trailer lights wiring. Got 'er done, simple, quick, looks to be watertight, and we have conductivity! This should be good against future corrosion weakening the junction, but time will tell. You know, if you have a trailer, you have trouble with the lights! This looks to be a good long-time fix. I don't mind spending a little time if I know it is going to last, and this is strong, and it appears to be sealed against the weather, 2 important things in electrical wiring. The little box holds all the units separated and seems strong enough to last. I am satisfied so far.UPDATE: It is now 2023, five years later, and I have had no failures on these. Used them on multiple projects. Very nice, easy to use, reliable connection.

These connectors can greatly simplify soldering and shrink wrapping BUT: you must be very careful when heating as the shrink wrap will burn through before the solder melts. Not as cut and dried as the video, at least not in my experience. I've used about 3 dozen of them and either the melting point of the solder needs to be adjusted or the thickness of the shrink tubing. As they are right now, it is a very slow process to get the solder to melt before burning through and the solder does not always melt and run evenly. When you get it all right, the connection is very tight and neat.

As a hobby I build dioramas and I use lots of wiring for lights and other electrical items. I ran across this item while searching for the normal crimp style butt connectors, and I’m glad I tried them out. I used my heat gun and these worked as advertised, they melted pretty fast and once it cooled off was a strong connection that would seem to be water resistant. I found that by using my heat gun and spreading the heat out evenly I got a perfect connection every time with no need for crimping or using heat shrink. I did read some of the negative reviews but I did not experience any of the problems that they stated. These work for me and I will be buying more soon because my supply is starting to run low.

I ALWAYS have these sitting on my work bench, best wire connection you can do for the money - I install a LOT of wires , u can't get it any better for a simple wire splice/repair ? - clean wire & these connectors = soldered-sealed-protection - I have variety kits and buy them in bulk - you can't go wrong - here's a LED light, power supply setup I was working on for a customer's UTV - relays stepping up to 24v , w/main relay inc protective Diode and these connectors make short work of joining these wires in 1 step - they're worth every penny

Two stars, only because the shrink tubing is VERY nice, and the adhesive KINDA works, sort of...I had high, high hopes for this version of the "self-soldering, waterproof, butt joint connector" that so many companies offer. The reviews looked quite good. This was my first time buying a product that does this. This one is a fail, BIG TIME.I used an SMD heat gun to concentrate hot air ranging from 120°C all the way to 165°C to try to get the "low temperature" solder to melt. It never did. Not on the tiny, 24 AWG size, nor the 12 AWG. They would KIND of soften, I guess, a little. But they would never flow. Not even close. The typical melting point for this type of solder is 125°C to 140°C. I started to get nervous about damaging the shrink tubing, or at the very least, the insulation on the existing wire.I even tried applying flux to the wires first. I went as far as to take the little solder ring out of a tube, put it on my workbench, and heat it at 165°C with DIRECT heat, and it just kind of softened into an ugly, misshapen blob-ring. It did not do what solder is supposed to do, i.e., liquefy and run a bit. The joints are probably OK in the connections I made, but only do to the squeezing pressure of the shrink-tube and the little bit of softening that probably makes a decent contact. But it's not "soldered" properly. Not by a long shot.