Rectorseal 14020 8-Ounce Nokorode Regular Paste Flux Tool Nokorode regular paste solder flux lead free, 8 oz Recroseal's nokorode regular paste solder flux 8Oz This is manufactured in United States Cleans and fluxes in one operation saving time and money Special oil base protects the solder joint against corrosive attack It's non-aggressive formula is ideal when used on copper and brass fittings Lead free and acid free-safe to use on potable water systems When heated, it reduces surface tension and allows the solder to flow easily and uniformly into the joint