Express Gel Solder Fluxes are designed for soldering copper, zinc and stainless steel metal roofing, wall panels and any project using these metals. Express solders are the standard for soldering metal roofing and gutters, as well as anything that needs soldering!
- 845 Flux (Black Cap) is for use on oxidized metals. 320ml (10.8oz) bottle
Soldering new, clean metals? Use Express 840 Flux (Red Cap).
This product cannot be shipped by air, so please do not select Next Day Air, 2-Day Air or 3-Day Select.
This product cannot be shipped outside of the contiguous 48 US States.