Top 10 Best Flux For Soldering Copper Pipe [2022]

Best Flux For Soldering Copper Pipe
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NoProductScoreAction
1Comstar 10-801 Copper Lock9.8Buy On Amazon
2La-Co-22194 WaterSoluble, All Weather Flux9.4Buy On Amazon
3Oatey Company 30374 1.7 Oz #95 Flux9.4Buy On Amazon
4Oatey 30132 Water Soluble Paste Flux9.4Buy On Amazon
5Oatey 50683 1/4lb Silver Safe Flo Solder9.2Buy On Amazon
6Forney 38060 Solder LF Solid 1/8"9.2Buy On Amazon
7Rectorseal 14000 1.7-Ounce Nokorode Regular Paste Flux9Buy On Amazon
8Oatay Plumbing Solder Kit9Buy On Amazon
9Rectorseal 74025 12-Ounce C-Flux8.8Buy On Amazon
10Oatea - #Oatey 53017 1.7 Oz Paste Flux8.4Buy On Amazon

Table Of Content:

1. Comstar 10-801 Copper Lock

  • ComStar’s Copper Lock is the revolutionary method for soldering pipes! Designed for the US Space Program!.
  • Simply apply it inside the connector and/or onto the pipe (or both); making sure the liquid is totally around the circumference, fit in the pipe and within 60 seconds a permanent leak-proof seal will prevail.
  • No heat or solder is required to create a permanent leak-proof bond
  • 10ml bottle will bond as many as 40 3/8 inch fittings
  • Exceeds all US Military copper bonding specifications: Mil-S-46163A Type I Grade K, Mil-S-224723E Letter Grade CVV.

2. La-Co-22194 WaterSoluble, All Weather Flux

  • Occupational Health & Safety
  • Country of Manifacturer: United States
  • Manufacturer: La-Co
  • Package Dimensions: 2.4″ L x 2.4″ W x 2.8″ H

3. Oatey Company 30374 1.7 Oz #95 Flux

  • Occupational Health & Safety
  • Country of Manifacturer: Mexico
  • Manufacturer: Oatey
  • Formulated with the same high quality as No.
  • Flux can never burn out
  • 100% lead free
  • Excellent for large diameter copper
  • Does not turn copper green

4. Oatey 30132 Water Soluble Paste Flux

  • Removes surface oxidation and provides superior wetting properties which allow better solder flow
  • For use with solid wire solder
  • Effective on all metals except aluminum and stainless steel
  • Water flushable
  • As thick as No. 5 flux
  • Meets ASTM B-813
  • Water flushable
  • As thick as No. 5 flux
  • Meets ASTM B-813

5. Oatey 50683 1/4lb Silver Safe Flo Solder

  • Returns will not be honored on this closeout item

6. Forney 38060 Solder LF Solid 1/8″

  • Strong yet durable construction
  • Designed for soldering potable water pipe joints
  • Great for applications that require strength

7. Rectorseal 14000 1.7-Ounce Nokorode Regular Paste Flux

  • Cleans and fluxes in one operation saving time and money
  • Special oil base protects the solder joint against corrosive attack
  • It’s non-aggressive formula is ideal when used on copper and brass fittings
  • Lead free and acid free-safe to use on potable water systems
  • When heated, it reduces surface tension and allows the solder to flow easily and uniformly into the joint.

8. Oatay Plumbing Solder Kit

  • Copper, bismuth, tin and silver alloy.
  • 1/4 lb solder and 1.7 oz flux
  • Meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act.
  • Formulated for plumbing/potable water line applications.

9. Rectorseal 74025 12-Ounce C-Flux

  • Occupational Health & Safety
  • Country of Manifacturer: United States
  • Manufacturer: Rectorseal

10. Oatea - #Oatey 53017 1.7 Oz Paste Flux

  • Effective on all metals except aluminum and stainless Steel
  • Compatible with all common plumbing solder alloys
  • Will not turn Copper Piping green
  • Good for large diameter Copper Piping

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