HARRIS SCPF4 Stay Clean Paste Soldering Flux, 4 oz. Jar

This flux performed so well it exceeded my expectations. A little of this paste flux on two pieces I was joining together, and the silver solder flowed perfectly between them creating an exceptionally strong joint.

Good quality, great price, fast shipping

Great product, work as described.

Works great with staybrite 8

Using this flux with "Ha Sta Brite 8 1/8" 1#10009 (348-SB861)" (freakin' expensive Sb/Ag solder but worth it for battery cable & off-grid Inverter use) works great. Just make sure to use it sparingly (very) when brushing stranded copper 1/0, 2/0 wire with copper ring terminals using a propane (or OA) torch as it'll "bubble up" from the bottom of the connector. Brush isn't firm enough to survive the dunking and sealing the jar (fans out where the brush becomes almost useless). Flux makes nice non-corrosive joints (so far).

Works great for using on areas meant to be soldered. Helps solder adhere to parts where solder is to be applied. I have no complaints.

I used this with Stay Brite 8 solder on a/c lines and it worked great.

I've been trying for days to get a connection for an AC R410 line to sweat properly. Installer before me used the worst copper line set ever. I even had trouble with top grade fittings to fit properly and had to swage the lines to fit the fittings. Never had to do this before in my life. I've used this stuff before and liked it. I'll probably use this stuff from now on.