Review on 🔌 Set of 200 Haisstronica 18-16 Green Solder Seal Wire Connectors - Waterproof, Heat Shrink Butt Connectors for Watercraft, Electrical, Electronics, Marine and Stereo Applications by Owoeye Reed

In my tests, the solder hardly melted. I ended up using some resin flux on the wires and the solder still barely flows. Also, the slightest movement while cooling will result in a weak physical connection. This is not a substitute for actual soldering and covering with waterproof heat shrink tubing and hardly counts as soldering in my opinion. Insert two 14 AWG wires into the device, although I figured it should have worked without removing the gasket material. Also, the unit took so much heat and time to melt the solder - I used a 1500w heat gun - there is a risk of burning the heat shrink and any wire you run has a high chance of damaging the waterproof material pierce and leave it useless. Crimp connectors with waterproof heat shrink coating.