Oatey #30142 8oz H-20 No. 95 Water Soluble Tinning Flux N/A Made in US Compatible with common plumbing solder alloys Ideal for use with large-diameter Copper Piping Designed for use in joining of sweating Copper pipe and fittings Cleans, fluxes and pre-tins Copper Piping for uniform solder flow Fluxing is a critical step in the soldering process H-20 No. 95 Tinning Flux is lead-free and ideal for copper systems including fire sprinkler, hydroid heating, potable water service and DWV piping H-20 No. 95 Tinning Flux remains active up to 700-Degree F. H-20 No. 95 Flux complies with CA & VT lead content regulations