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< Flux

Oatey® No. 5 Paste Flux

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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.




Available in 5 variations

Key Features & Benefits

  • 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

Specifications

Brand: Oatey
Lead: No
Product Type: Regular Flux
California VOC Compliant: Yes
Color: Amber

More Specifications

Technical Resources (8)

  • Submittal
  • SDS
  • SDS Canada English
  • SDS Canada French
  • SDS Spanish
  • FAQ
  • LEED Green Sheet
  • Product Information

More Downloads

Available in 5 variations

Frequently Asked Questions

What is the difference between #5 and #95 fluxes?

The #95 paste flux contains a silver solder tinning powder which helps fill in the joint when heat is applied, #5 does not.

What type of solder and flux should I use to solder stainless steel?

None. Oatey does not manufacture a solder or flux for this application.

What is the difference between water soluble and non-soluble (petroleum base) flux?

The water soluble flux is less corrosive, and self-cleans on the interior of the pipe as water flows through the lines. The water soluble flux has a narrower temperature range when heating, but it works with all the solders. 

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