Oatey No. 5 Lead Free Paste Flux cleans and fluxes most commonly soldered metals including copper, brass, zinc, galvanized iron, lead and tin or copper-coated metals. Fluxing is a critical step in the soldering process. No. 5 Paste Flux provides superior wetting properties for better solder flow and can be used with most soft solders. No. 5 Paste Flux complies with CA & VT lead content regulations.

Oatey® Pipe Flux, 16 oz, Pail, Composition: Petrolatum, Zinc Chloride, Water, Ammonium Chloride, Solid Paste, Amber, 20000 - 40000 cP Viscosity, 400 - 700 deg F, 29 g/L VOC, 540 deg F Flash Point, 3 - 4 pH, Applicable Materials: Copper, Brass, Zinc, Galvanized Iron and Tin or Copper-Coated Metals

• Effective on all metals, except aluminum and stainless steel
• Compatible with common plumbing solder alloys
• Will not turn copper piping green
• Good for large diameter copper piping
• 100% lead-free paste flux cleans and fluxes copper piping to provide uniform solder flow
• Petroleum base provides cleaning effectiveness
• Material is safe for use in potable water applications
• 29 g/L 3% by weight
• Includes brush for easy flux application

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Oatey_38540_Catalog.pdf
• SDS https://assets.unilogcorp.com/267/ITEM/DOC/Oatey_30041_SDS.pdf
• Video Link https://youtu.be/U73pFcBc8Rc