Top 10 Best soldering flux liquid in 2026

Main highlights

• •USA Quality Flux - Achieve the soldering results you desire with SRA 135. Our rosin paste flux is impurity free with superior solder flux paste wetting performance. Rosin flux soldering perfected.
• •No Goop Solder Flux - Semi-solid solder wax consistency gives you superior control over application. Simply dip copper electric wires or apply electronic rosin flux to PCB and watch the solder flow!
• •Electric Solder Flux - Unlike paste flux wax found at the hardware store, SRA 135 acid free electronics soldering flux is the safe and effective choice for electrical and electronic applications.
• •Flux Specifications - 135 is a type RA (Rosen Activated) Flux with an Active Temp. Range of 93 – 315°C / 200 – 600°F. This listing is for one 2oz (56.6g) jar of electrical flux paste.
• •Flux for soldering DIY electronics projects including Car Audio, Stereo & Hifi, Computers, RC Vehicles, Drones / FPV, Musical Instruments, Gaming Consoles, Model Railroad, Arduino / Raspberry Pi, etc.

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• •Lead-Free, Halogen Free, Non-Corrosive, Good Flow Ability
• •High Purity Rosin Soldering Flux, Good Helper For Repairing And Soldering
• •Product Advantages: Pushing-Type Design Smoother Flowing No Wasting During Welding
• •High Activity Rosin Can Help To Remove The Oxide Layer On The Welding Surface Easily
• •Suitable For Soldering PCB, SMD, SMT, Handwork, Phone, Home Appliance and Meters Repairing

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• •Novacan Old Masters Flux
• •All-purpose zinc flux
• •Cleans up easily with water
• •8 oz

Main highlights

• •Includes: One 8oz Aquiflux in a Spray Bottle. (275 ml)
• •Yellow-green and self-pickling, it is the best in water-based fluxes
• •Well-mixed to eliminate suspension
• •Use this hard flux on Gold, Silver, Platinum, and other metals with high melting point
• •The benefit of liquid flux is that its transparency will let you see the solder joint more clearly when soldering and the liquid flows better in joints than a paste
• •Self-pickling and is the best in water-based fluxes

Main highlights

• •Versatile Stained Glass Use: IMPRESA's Liquid Zinc Flux is designed for both hobbyists and professionals, offering seamless application to enhance stained glass supplies. Compatible with stained glass copper foil tape, it ensures reliable bonds for elegant art
• •Effortless Application Brush: This flux includes a precision brush for easy application, minimizing mess while maximizing efficiency in stained glass soldering. The liquid solder simplifies the process, making it a valuable addition to any stained glass soldering kit
• •Quick Cleanup Formula: The water-soluble formula allows for rapid cleanup, ensuring your stained glass supplies remain in excellent condition. Simply wash within 6 to 8 hours to maintain the quality and longevity of your stained glass essentials
• •Crafted in the USA: Proudly made in the USA, this flux meets high-quality standards, offering durability and reliability in stained glass making supplies. Its superior craftsmanship elevates your stained glass accessories, showcasing a commitment to excellence
• •Enhance Your Craftsmanship: Ideal for both beginners and seasoned artisans, this flux supports a clean bond in stained glass soldering. Elevate your creations with a dependable solution that integrates seamlessly with any stained glass repair kit

Main highlights

• •Versatile Application: This 50ml bottle of RMA liquid solder flux is ideal for electrical soldering, aluminum soldering
• •No-Clean Formula: The flux is a no-clean type, eliminating the need for post-soldering residue removal and saving time and effort.
• •Precision Applicator: Equipped with a dropper for controlled and accurate application, minimizing waste and ensuring optimal flux coverage.
• •Reliable Performance: Formulated to improve wetting and flow of solder, facilitate heat transfer, and promote strong, reliable solder joints.
• •Convenient Size: The 50ml (1.7 fl oz) bottle provides ample flux for hobbyists, DIY enthusiasts, and professionals alike.

Main highlights

Main highlights

• •Volume (fl. oz.): 2

Main highlights

• •Kester 1544 Liquid Flux Repackaged by CML Supply in this convenient dispensing bottle
• •Lead Free - RoHS compliant.
• •Compatible with Lead and Lead-Free Solders
• •2-ounce bottle
• •Activated Rosin Formula