Best Soldering Flux in 2026

The Ideal Flux For Electrical And Electronic Repairs

Contains 2 Ounce In A "Hockey Puck" Jar

Formulated For Use With Tin/Lead And Lead-Free Alloys

Superior fluxing ability

Instant wetting

After soldering, the rosin residue is non corrosive, non conducting, moisture resistant, and fungus resistant

Novacan Old Masters Flux

All-purpose zinc flux

Cleans up easily with water

Solder Flux

Lead Free

Halogen Free

Improves solder flow for accurate and controlled soldering

Facilitates the soldering process, making it faster and more efficient

Creates strong mechanical and electrical bonds for long-lasting connections

Ideal for electronics soldering, repair & rework

For Lead & Lead free applications

Contains 2 ounces in a 3" Dia x 0.62“ H Can

All-purpose flux specially formulated for stained glass use

Includes an application brush! Goes on easy without being runny or sloppy.

Completely water-soluble, making clean up quick and easy

ENOUGHT QUANTITY: The package includes 2 jars of soldering flux. A total of 70 g. Enough quantity for your use.

NON-CORROSIVE: Rosin is not conductive in dry conditions and has good insulation. Is not corrosive to metal substances such as circuit boards.

OXIDATION RESISTANCE: Anti-oxidation effect on soldering iron head of gold-copper alloy substrate. Solder flux for semi-solid, not easy to dump.

Super detergent action cleans as it solders; non-acid, non-toxic, lead-free

Contains no zinc chloride; use with all lead-free and common soft solders

For use on copper, brass, galvanized iron, lead, zinc, tin, silver, nickel mild steel, terne plate, and malleable iron

Remove QFDs, PLCCs, SOICs and chip components without costly equipment

Use with existing rework equipment or temp controlled soldering irons

Special removal alloy has excellent wetting ability

Country Of Origin: Mexico

Model Number: SCLF4

Item Package Dimension: 2.75" L x 2.75" W x 4.75" H

Kester 1544 Liquid Flux Repackaged by CML Supply in this convenient dispensing bottle

Lead Free - RoHS compliant.

Compatible with Lead and Lead-Free Solders

Product: Soldering Flux Paste

Attributes: Neutral PH7 ±0.3; Net Weight 50g/1.8oz

Function: Soldering electronic components. Anti-oxidation flux. Better welding fluidity. Easy to tin, easy to solder, strong welding.

For electrical and electronic soldering applications

Thermal stability enabling excellent wetting and reduced carbonization at soldering temperatures.

Activity closely approaches that of fully activated rosins.

Includes: One 8oz Aquiflux in a Spray Bottle.

Efficiently removes oxides and scale from metal surfaces

Compatible with a wide range of metals, including Gold, Silver, Platinum, steel, stainless steel, copper, brass, and bronze

Nokorode regular paste solder flux lead free, 8 oz

Recroseal's nokorode regular paste solder flux 8Oz

This is manufactured in United States

Paste Flux

4oz Bottle

Flux

CS-FLUX when heated at around 150 degrees (Celsius) turns into liquid and covers the small gap between the BGA component and the PCB completely. This way all solder balls are covered with CS-FLUX and during reflow or removal of the BGA components all PCB and component pads and balls are protected from oxidation.

CS-FLUX is no clean flux and causes no corrosion if not cleaned, but if needed it can be cleaned very easily with alcohol. It causes no corossion on the PCB or components.

Thanks to its liquid nature, a very small amount of CS-FLUX is needed for each repair resulting in a much cleaner work environment. CS-FLUX is Lead Free and halogen free and produces the minimum amount of fume .

High thermal stability for soldering multi-layer assemblies which require higher temperatures

Exposure to high preheat temperatures does not degrade solubility of the residue in normal cleaning

Improves soldering performance; eliminates the need and expense of cleaning

4 3/4-Inch x 3/8-Inch size

Tinning brush for liquid or paste flux

Also used for solder and other applications

For rework and touch-up of smt, smd, and through hole solder joints

Suitable for automotive, computer, telecom

10Ml pen applicator with specially designed felt tip

HANDY FLUX - PASTE 7oz Jar with Brush Cap PASTE FLUX SOLDERING BRAZING FLUX

Handy Flux is a very durable and powerful general purpose flux that protects your parts up to 1600°F (870°C)

It is an active fluoride-type flux which is appropriate for all nonferrous metals

It begins to melt and dissolve oxides at 600°F (320°C)

60 ml. COMBO KESTER 951 + KESTER 186 Soldering Lead Free Flux NO CLEAN

✔️EXCELLENT QUALITY :High purity, Advanced RMA -Rosin Midly Activated- Paste flux formula, RoHS Certificate Compliant, Semi-Solid, Organic, Environmental friendly soldering flux paste. Formulation for electronic soldering applications. It is effective in removing oxides from Tin-Lead, Lead-free, Gold, Silver and Copper alloys.

✔️ENOUGHT QUANTITY: The package includes 1 High Quality Aluminum Jar container of soldering paste flux, 2 ounces/57 grams net weight. Excellent Immersion, wettability, chemical and technical properties. Thus, Enough quantity for your use. Strong soldering and welding power resulting strong low residual joints.

✔️NON-CORROSIVE: Formulation with neutral pH, no corrosion involve after soldering process. Rosin is not conductive in dry conditions and has good insulation. Is not corrosive to metal surfaces such as circuit boards.

Kester 2331ZX pen

10ML

Made in the USA

3.52oz/100g Rosin Solder Paste Flux, made of no acid, Lead-Free, No-Clean, soldering flux paste which is not easy to dump. BGA flux paste, easy to tin, less residue.

Rosin Soldering Paste,High Purity,Good Helper For Repairing And Welding.

Scope of application: suitable for soldering Iron Tip Cleaning,mobile phone, BGA repair, PC card and other precision electronic chip-level flux soldering. Have strong oxide removal effect to gold-copper alloy substrate and Wire.

Acid and petroleum based

Petrolatum based

Item Package Dimension: 8.25" L x 6.75" W x 5.75" H

Kester 951 Liquid Flux Repackaged by CML Supply in this convenient dispensing pen

Lead Free - RoHS compliant.

Compatible with Lead and Lead-Free Solders

High thermal stability

Improves soldering performance

Eliminates the need and expense of cleaning