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5 Best Solder Fluxes Pastes of 2025

Last Updated - 22/05/2025

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Gruiqrd

Gruiqrd Solder Flux Paste, Solder Wire Lead Free, Soldering Iron Tip Cleaner, Micro Shear Wire Cutter Pliers, 4 PCS Solder Tool Set, Soldering Iron Assist Accessories DIY Kit

Gruiqrd

£15.99

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Main highlights
- Widely Application: Suitable for DIY and electronic connections, such as welding circuit boards, mobile phone motherboards, watches, appliances, DIY, jewellery welding
- Soldering Tip Cleaner: Cleaner cleans better than conventional sponges. Without water It does not reduce the temperature of the tip and cleans your tips quickly and cleanly
- Soldering Paste: Soldering paste ensures fast, efficient cleaning and pewter removal of blackened and highly oxidised soldering iron tips
- Micro Scissors Wire Cutter: Made of high quality steel, has a large cutting capacity, and the angle of the tips is enough to cut the component precisely, compact size for access in small areas
- Lead Free Solder Wire: High quality solder wire: flows well and heats evenly, easy to use. Good solderability in terms of both electrical conductivity and thermal conductivity
£15.99
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

prowithlin

prowithlin Solder Flux, 60 ml, 2pack Soldering Flux with 2 Needles, 1 Pusher, 1 Syringe - 60 g No Clean Flux Soldering Paste for BGA/IC/CPU/PCB/SMD Repair and DIY Projects

prowithlin

£13.99

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Main highlights
- Versatile Applications: Ideal for electronic repairs, PCB assembly, and DIY projects. Reliable performance of solder flux for professionals and hobbyists
- Storage & Shelf Life: Store flux soldering paste in a cool, dry place. 2-year shelf life. Reseal after use to maintain the quality of solder flux
- No-Clean, Non-Corrosive: Rosin-based, acid-free, lead-free, non-conductive flux soldering paste. Good in wetting, easy to solder, has less smoke, and has no annoying smell. Minimal residue, no cleaning needed
- High Capacity & Accessories: 2-pack of 30g solder flux, total 60g. Includes 2 needles, 1 pusher, and 1 syringe. Easy control and no waste with airtight packaging. Perfect for precise application of soldering flux
- Excellent Customer Service: If you have any questions or problems with our solder flux, please feel free to send a message to the seller through Amazon. We will provide you with a satisfactory solution
- Easy to Use: Clean the surface of the object before welding, apply this solder paste on the copper, iron, tin, and other metals at the welding site, and then use the soldering iron to melt the tin at the welding site
£13.99
3
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MG Chemicals

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

MG Chemicals

£7.67

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Main highlights
- Thixotropic paste; RoHS compliant
- Superior fluxing ability
- Instant wetting; Leaves shiny solder joints
- Compatible with lead free and leaded solder systems
- After soldering, the rosin residue is non corrosive, non conducting, moisture resistant, and fungus resistant
£7.67
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TermoPasty

New flux soldering paste in the 100g tin for electronics SMD plumbing DIY et

TermoPasty

£5.59

More Details
Main highlights
- New flux soldering paste in the 100g tin for electronics SMD plumbing DIY etc
£5.59
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Gruiqrd

Gruiqrd 40g Solder Tin Paste with Syringe,138°C Low Temperature Syringe Solder Paste, Sn42/Bi58 Flux Soldering Paste with 4 Needles and 1 Push Rod, Solder Paste for Bag,PCB, CPU, SMT

Gruiqrd

£8.99

More Details
Main highlights
- Product Advantages: Pushing design for Smoother Flowing, No Waste During Welding. Plunger injection needle features: Reflow soldering will not produce tin beads and tin bridges
- Lead-Free Solder Paste: No Clean, Strong Viscosity, Bright Welding Point. Medium Temperature Solder Paste With Flux, Melting Point: 138°C (280F)
- High Solderability: A high-performance thixotropic agent is added to the solder to make the solder paste highly active. The solder is significantly moistened during the soldering process, thereby reducing the phenomenon of false soldering
- Gruiqrd Solder Paste Content: Alloy Tin 42% Bi58% , Solder Flux Content: 10.5%. Total Weight: 50g, Net Weight Of Paste: 40g
- Applications: Low-temperature tin is often used in the repair of electronic products. Low-temperature tin is mainly used for items that cannot withstand the high temperature of the device. For example, electronic components that cannot withstand high temperatures, LED soldering, PCB BGA CPU SMD Maintenance
£8.99

5 Best Solder Fluxes Pastes of 2025

Gruiqrd Solder Flux Paste, Solder Wire Lead Free, Soldering Iron Tip Cleaner, Micro Shear Wire Cutter Pliers, 4 PCS Solder Tool Set, Soldering Iron Assist Accessories DIY Kit

prowithlin Solder Flux, 60 ml, 2pack Soldering Flux with 2 Needles, 1 Pusher, 1 Syringe - 60 g No Clean Flux Soldering Paste for BGA/IC/CPU/PCB/SMD Repair and DIY Projects

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

New flux soldering paste in the 100g tin for electronics SMD plumbing DIY et

Gruiqrd 40g Solder Tin Paste with Syringe,138°C Low Temperature Syringe Solder Paste, Sn42/Bi58 Flux Soldering Paste with 4 Needles and 1 Push Rod, Solder Paste for Bag,PCB, CPU, SMT

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