Oatey No. 5 Paste Flux is a petrolatum-based flux designed to provide superior wetting properties for better solder flow. It can be used with most soft solders, 100% lead-free and safe for use on potable water applications. No. 5 Paste Flux’s formula prevents copper piping turning green and is excellent for large diameter copper pipe applications. Oatey products have earned the trust of plumbing professional for over 100 years.
- Effective on most metals, excluding aluminum and stainless steel
- Compatible with common plumbing solder alloys
- Good for large diameter copper piping
- Formula resists turning copper piping green
- 100% lead-free flux cleans and fluxes copper piping
- Petrolatum base provides effective cleaning
- NSF standard 14 (performance) and standard 61 (health effects) certified
- Safe for use in potable water applications
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