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 professionals for over 100 years.
- Petrolatum-based solder paste flux.
- 100% lead-free paste cleans and fluxes copper piping.
- Effective on all metals except aluminum and stainless steel.
- Ideal for large diameter copper piping.
- Petroleum base provides cleaning effectiveness.
- Will not turn copper piping green.
- Compatible with all common plumbing solder alloys.
- Material is safe for use in drinking water applications.
- NSF standard 14 (performance) and standard 61 (health effects) certified.
- Excellent wetting characteristics for better solder flow and exceptional bonding.