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White plastic bottle with black cap, 80 oz liquid flux

Harris

Harris Soldering Flux 80 oz Stay-Clean Liquid

SKU CH-134W-RVD0G

Stay-Clean inorganic-acid liquid flux in an 80 oz bottle works on brass, copper, nickel, stainless steel and steel with lead-free, leaded or tin-based solders up to 700 °F

  • Product typeSoldering Flux
  • Large 80 oz capacity covers many jobs
  • Inorganic acid flux cleans copper, brass and steel
  • Works with lead-free, leaded and tin alloy solders
  • Active to 700 °F for general-purpose soldering
  • Meets A-A-51145SC standard for reliable performance

Harris Stay-Clean Flux for Metal Joining

Harris Stay-Clean liquid flux comes in an 80 oz bottle designed for general-purpose soldering on brass, copper, nickel, stainless steel and steel. It suits both lead-free and leaded solder alloys including tin/antimony and tin/lead. The inorganic-acid formula meets the A-A-51145SC standard. It is not intended for electrical or electronic work.

Capacity and Active Temperature Range

The 80 oz container provides ample volume for repeated workshop jobs while the flux remains active up to 700 °F, giving headroom for high-temperature joints. Above that temperature the flux breaks down and will no longer protect the workpiece. Clean-up requires a dedicated flux remover rather than water alone.

Bottle Format and Usage Constraints

The liquid stays in a bottle that pours directly onto the joint, so no separate pot or brush is mandated by the packaging. Because the formulation contains chemicals listed under California Proposition 65 for cancer and reproductive harm, users must follow safe-handling practices and avoid electrical or electronic applications where residue could cause corrosion.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $63.99
Pricier than about 54% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameHarris
Product typeSoldering Flux

Questions about this item

Will the 80 oz bottle of Stay-Clean flux work with the lead-free solder I already use for copper pipe?

The flux is formulated for both lead-free and leaded solders including tin/antimony and tin/lead alloys, so it is compatible with the solder you have on hand.

How can I verify the flux is still active after I open the bottle?

The liquid should remain clear and flow freely; when heated on copper or brass it will bubble and clean the surface up to the 700 Degrees F maximum active temperature.

Does the 80 oz bottle include a brush or do I need to buy an applicator separately?

The container is a plain bottle without a built-in brush, so a separate flux brush or applicator will be needed for application.

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