10 Best soldering fluxes of 2025

Save up to 35% off

Best Choice

1

Essmetuin

Essmetuin No Clean Soldering Flux Paste(4Pack), Solder Flux For Electronics Soldering, Tin soldering, Lead-Free Rosin Soldering Flux For Circuit Boards and Copper Electrical Wire
9.6

Exceptional

Our Rating

9.7
Simple to use

9.7
Easy to use

9.5
worth the money
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Value for Money

2

BEEYUIHF

BEEYUIHF No-Clean Soldering Flux Paste, flux for Soldering, Solder Paste for Electronics PCB/IC/BGA/SMD Repairing (5.15oz/146g)
9.3

Excellent

Our Rating
3

QUIMTECH

Liquid Solder Flux Dropper (30 ml/1 Oz.) I RMA Liquid Solder Flux I Soldering Flux I Electrical Solder I No Clean Liquid Flux I Rosin Flux I Soldering Flux for Electronics I Lead Free Liquid Solder I
9.2

Excellent

Our Rating

9.3
Simple to use

9.1
worth the money

8.0
Simple to clean
4

SRA Soldering Products
SRA Solder 135 Rosin Paste Soldering Flux For Electronics, No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar)

22% Off
Main highlights

Superior Solder Flux Performance
Achieve the soldering results you desire with SRA 135. Our rosin paste flux is impurity-free with superior solder flux paste wetting performance.

Ideal for DIY Electronics Projects
Perfect for soldering car audio, stereo & hifi, computers, RC vehicles, drones, musical instruments, gaming consoles, model railroads, Arduino/Raspberry Pi, etc.

Highly Effective and Long-Lasting
Customers appreciate its ability to clean up solder immediately, making soldering breeze-easy and lasting a long time, even with frequent use.
9.1

Excellent

Our Rating

9.5
worth the money

9.5
Simple to use

9.5
Simple to clean
5

Romeda
2 Jar Solder Flux, Flux for Soldering, Rosin Soldering Flux Paste for Lead-Free Electronics Soldering and Soldering DIY (1.2oz/35g in a Jar)
Main highlights

ENOUGH QUANTITY FOR USE
The package includes 2 jars of soldering flux, totaling 70 g, ensuring ample supply for various soldering tasks.

IDEAL FOR ELECTRONIC WELDING
Flux is suitable for welding instruments, gold, copper, tin, iron, and other metals; perfect for electronic welding, repair, and rework.

EASY TO USE AND EFFECTIVE
Customers appreciate its ease of use and effectiveness, making it a great value for achieving clean and successful solder joints.
Key specs
- package dimensions:4.96 x 2.5 x 1.02 inches
- material:lead, iron, gold, tin, carbon
- included components:2 jars of soldering flux
- size:N/A
- color:N/A
9.0

Excellent

Our Rating

9.5
worth the money

9.5
Simple to use

9.5
Simple to take off
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6

Essmetuin

Desoldering Wick and Soldering Flux Paste for Electronics Repair, No Clean Flux(10CC), Solder Removal Kit
8.9

Very Good

Our Rating
7

Rectorseal
Rectorseal 14000 1.7-Ounce Nokorode Regular Paste Flux
Main highlights

Time_and_Money_Saving_Feature
Cleans and fluxes in one operation saving time and money. Special oil base protects the solder joint against corrosive attack.

Ideal_Use_for_Plumbing_and_Stained_Glass
Its non-aggressive formula is ideal when used on copper and brass fittings. Lead free and acid free-safe to use on potable water systems.

Smooth_Solder_Flow_Praised_by_Customers
Runs a nice smooth solder line. It also washes off easily with soap, no need for a flux remover. Customers appreciate its ease of use.
Key specs
- package dimensions:2.2 x 2.2 x 1.8 inches
- material:brass
- included components:Rectorseal 14000 1.7-Ounce Nokorode Regular Paste Flux
- size:1.7 Oz
- color:Original Version
8.8

Very Good

Our Rating

9.7
worth the money

9.5
materials Quality

9.3
Simple to use
8

MG Chemicals
MG Chemicals - 8341-10ML 8341 No Clean Flux Paste, 10 milliliters Pneumatic Dispenser (Complete with Plunger & Dispensing Tip)

35% Off
Main highlights

Superior Fluxing Ability
Superior fluxing ability, instant wetting, non-corrosive residue, compatible with lead-free and leaded solder systems, RoHS compliant, thixotropic paste.

Ideal for Electronics Projects
Perfect for electronics projects, complex circuits, Game Boy screen replacements, car repairs, and professional electronic assembly tasks.

Easy Application and Cleanup
Customers praise its easy application, precise needle tip, minimal fume emissions, and no-clean feature, though some recommend cleaning with isopropyl alcohol.
8.5

Good

Our Rating

9.7
Simple to use

9.3
Simple to clean

8.9
Attachment
9

BEEYUIHF

BEEYUIHF Rosin Solder Flux Paste, Flux for Soldering for SMD BGA LED PCB IC CPU electronic repair & soldering (1.76oz/50g)
8.4

Good

Our Rating
10

QUIMTECH

Solder Flux Pen (10 ml) I Liquid Solder Flux I Soldering Flux I Electrical Solder I No Clean Liquid Flux I Rosin Flux I Soldering Flux for Electronics I Lead Free Liquid Solder I Flux for Soldering I
8.3

Good

Our Rating

8.9
Simple to clean

8.4
dispense easily

8.0
Simple to use

10 Best soldering fluxes of 2025

1

Essmetuin No Clean Soldering Flux Paste(4Pack), Solder Flux For Electronics Soldering, Tin soldering, Lead-Free Rosin Soldering Flux For Circuit Boards and Copper Electrical Wire

9.7

9.7

9.5

How do we rank?

How do we rank?

Analyzing top stores

2

BEEYUIHF No-Clean Soldering Flux Paste, flux for Soldering, Solder Paste for Electronics PCB/IC/BGA/SMD Repairing (5.15oz/146g)

3

Liquid Solder Flux Dropper (30 ml/1 Oz.) I RMA Liquid Solder Flux I Soldering Flux I Electrical Solder I No Clean Liquid Flux I Rosin Flux I Soldering Flux for Electronics I Lead Free Liquid Solder I

9.3

9.1

8.0

4

SRA Solder 135 Rosin Paste Soldering Flux For Electronics, No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar)

9.5

9.5

9.5

5

2 Jar Solder Flux, Flux for Soldering, Rosin Soldering Flux Paste for Lead-Free Electronics Soldering and Soldering DIY (1.2oz/35g in a Jar)

9.5

9.5

9.5

6

Desoldering Wick and Soldering Flux Paste for Electronics Repair, No Clean Flux(10CC), Solder Removal Kit

7

Rectorseal 14000 1.7-Ounce Nokorode Regular Paste Flux

9.7

9.5

9.3

8

MG Chemicals - 8341-10ML 8341 No Clean Flux Paste, 10 milliliters Pneumatic Dispenser (Complete with Plunger & Dispensing Tip)

9.7

9.3

8.9

9

BEEYUIHF Rosin Solder Flux Paste, Flux for Soldering for SMD BGA LED PCB IC CPU electronic repair & soldering (1.76oz/50g)

10

Solder Flux Pen (10 ml) I Liquid Solder Flux I Soldering Flux I Electrical Solder I No Clean Liquid Flux I Rosin Flux I Soldering Flux for Electronics I Lead Free Liquid Solder I Flux for Soldering I

8.9

8.4

8.0

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