Internet #100177185

Model #301302

Store SKU #555313

H-20 1.7 oz. Lead-Free Water Soluble Solder Flux Paste

  • Flux is made with a water-soluble formula
  • Works on most metals except for aluminum and stainless steel
  • Solder used in joining or sweating copper pipe and fittings
  • See More Details

Frequently Bought Together

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Price:
$420

Product Overview

This Oatey H-20 1.7 oz. Water-soluble solder paste flux is designed for use in joining or sweating copper pipe and fittings. It meets ASTM standard B-813 and is approved for use by model plumbing codes. This paste contains no lead and will not turn copper pipe green.
  • Effective on most metals, excluding aluminum and stainless steel
  • Compatible with common plumbing solder alloys
  • Formula resists turning copper piping green
  • Lead-free flux cleans and fluxes copper piping
  • Petrolatum base provides effective cleaning
  • Standard 14 (performance) and standard 61 (health effects) certified

Info & Guides

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Price
$358
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$420
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Ratings
(25)
(4)
(51)
(28)
Solder TypeFluxFluxPasteWire
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Specifications

Dimensions

Container Size (oz.)
1.7
Product Depth (in.)
1.5
Product Height (in.)
1
Product Width (in.)
1.5

Details

Color Family
Assorted Colors
Flux required
Yes
Flux Type
soldering Paste Flux
Maximum Flux Temperature (F)
120
Returnable
180-Day
Solder Type
Paste
Soldering Product Type
Solder

Questions & Answers

5Questions19Answers

Is it applicable with electronics?

Asked by Kris April 8, 2018
5
Answers

No, electronics need a Rosin Core Solder.

Is there a special technique or suggestions for the water soluble flux vs petro/acid version?

Asked by Jason March 16, 2018
5
Answers

I find you have to keep the heat farther away from the joint. The flux melts easily and flows like water.

How long should the pipes be flushed after soldering to ensure excess flux is removed?

Asked by David January 9, 2018
4
Answers

A few minutes is plenty.

Can this be used with soft silver solder contaning 8% silver?

Asked by Dashman0 August 2, 2016
1
Answer

yes

Can this product be used with lead (50/50, 95/5) solder ?

Asked by Barron July 19, 2015
4
Answers

I used it with 70/30 and it did fine.

Customer Reviews

  • 52 Customer Reviews
  • 3.4 out of 5 stars overall
61% of customers recommended.
Overall Ratings
5star-icon(21)
4star-icon(7)
3star-icon(6)
2star-icon(3)
1star-icon(15)
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I got this paste flux to use for tinning my soldering iron tips. It was recommended on a few You...
Quality :
5
Seeds Program Review
(What's this)
I got this paste flux to use for tinning my soldering iron tips. It was recommended on a few YouTube videos showing how to properly tin soldering irons. I don't usually sweat copper pipes, but if I ever need to, this paste flux will be useful for that as well. I really like that it is sold in a small container (1.7 oz), as I will use very little, and the small plastic container will fit easily in the box I use to store my soldering iron. Given the small amount of flux that I'll be using, this small container will last me decades. The flux is a moderately thick paste, almost like a thick oily batter consistency. The small container is completely full, so be careful when opening it, as a lot will stick to the lid at first and can make a bit of a mess. The paste is nice, as it will stick to the metal and not drip all over. I look forward to easier soldering with this flux!
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Quality :
5
Seeds Program Review
(What's this)
I really love the OATEY H-20 1.7 OZ. WATER-SOLUBLE SOLDER PASTE FLUX I got! I decided to try it, because of the OATEY name. I have been using their PVC primers and cements for years without a problem, so I decided to give their soldering paste a shot. It leaves the joints shiny and clean. It is beige in color, is water soluble, and has the consistency of softened butter, but best of all, it is safe for drinking water! I highly recommend this product!
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Love this water cleanup soldering flux. It has a paste type base but is a bit runny for a paste b...
Quality :
5
Seeds Program Review
(What's this)
Love this water cleanup soldering flux. It has a paste type base but is a bit runny for a paste but still I thoroughly love this stuff. I did a lot of stained glass 45 years ago but stopped because of hand tremors. I still have a lot of items I made around and in moving and with pets they get damaged and need repair. We had a parakeet who completely chewed through an edge, copper foil and all. After a repair I would spend more time trying to clean up the flux residue than preparing for and making the repair. This stuff washes off easily. I used an old toothbrush and hand soap and WHAM, clean. Soldering job not so great but then neither are my hands anymore.
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1
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Somewhat awkward packaging is more problematic to me than the change in formulation. Plumbing con...
Quality :
3
Seeds Program Review
(What's this)
Somewhat awkward packaging is more problematic to me than the change in formulation. Plumbing continues to change to use safer products, and this flux is no exception. Much like having to learn to use lead free solder, it looks like water soluble flux is our future too. So, this small package was worth a try. But, this is barely a paste. I'm trying it on a cold day and I could barely achieve a peak with a dab of it, compared to the old stuff (see photo). On a hot day you'll have to work hard to coat the joints. I guess that is still workable. My biggest concern is the small package. I'm down to mostly just making copper to PEX transitions, so I don't need much flux for the rare times I need it. Thought this little package would fit nice in the tool box (it does). But it is hard to seal. My container sealed, but only after a lot of flexing. It was an air bubble issue due to the hard case top. Will it leak out? I don't know. I'm going to put this in a bag. I would opt for the larger container for just a tiny bit more. And if possible and code allows, stick with the traditional paste until these products are further refined. Made in USA
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Water soluble sounded like it would be a welcome change from the stiff usual flux so I tried it. ...
Quality :
1
Seeds Program Review
(What's this)
Water soluble sounded like it would be a welcome change from the stiff usual flux so I tried it. First thing is that when you open the container, it falls out unless you keep it flat on the table. I sanded the copper and wire brushed the fitting all shiny. I applied the flux and heated it up. The solder did not flow like it should have so I heated it more but it just would not flow right. I rounded the fitting multiple times but it still did not flow right. To test it I heated it again, pulling it loose and the solder just did not stick like it should, leaving a poor joint. Not good. P.S. I have been making copper joints for over 40 years and know what I am doing.
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I don't really like water-soluble flux, but it is something we are going to have to get used to. ...
Quality :
4
Seeds Program Review
(What's this)
I don't really like water-soluble flux, but it is something we are going to have to get used to. It is required by code in some areas for potable water. I expect it to be required everywhere eventually. This past does a good job if you use it properly. You have to hold the flame away from the joint, and not hit the flux with it. I find about the middle of the fitting, or at least 1/2" from the joint works. The past has a fairly low melting point. It is hard to get an even coat. It doesn't take much heat to get it flowing, and it makes a mess. It seams to have less fumes then standard flux. Remember the learning curve when switching to lead-free solder and flux? This change isn't as bad, but you will still have to lean the proper way to use this flux.
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2
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Oklahoma City, OK
I have been using Oatey plumbing products most of my adult life for my moderate plumbing needs. T...
Quality :
5
Seeds Program Review
(What's this)
I have been using Oatey plumbing products most of my adult life for my moderate plumbing needs. This water-soluble solder paste flux is one of my favorite fulx. I have been using this particular H-20 water soluble since about early 2000 and have never had a leak or any issue what so ever. After reading some of the previous negative reviews, not really sure what those people were doing wrong, but this paste flux does exactly what it is supposed to do, which is clean the pipe to be soldered as well as aid in drawing the solder into the joint for seal. The flux then rinses out pretty quickly, like 10-15 minutes and it's gone. If Oatey isn't your go to plumbing needs company...it should be.
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I’m not an expert plumber.....I’m a handy Do it yourself kind of guy. I have used flux in the pas...
Quality :
3
Seeds Program Review
(What's this)
I’m not an expert plumber.....I’m a handy Do it yourself kind of guy. I have used flux in the past, and found it actually pulled the solder quickly into the joint. This flux is watery and has trouble staying in the joint when applying, and it gets more challenging when you apply heat to it. I found this solder difficult to use, again I am not a pro, so it could be me.
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I have used this product mostly for joining copper piping for potable water lines. Its water sol...
Quality :
5
Seeds Program Review
(What's this)
I have used this product mostly for joining copper piping for potable water lines. Its water soluble and the only such flux to be used for this purpose. I have used other fluxes that were not water soluble for other situations but find that this type is the only flux I need for all sorts of soldering projects. For this review, I decided to demonstrate a feature that some may not know about. I use it to clean my soldering tips for better and faster heat transfer. Just heat up the iron or gun, and dip it into the flux. Whaa-la... clean and ready to use.
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This review is for Oatey H-20 1.7 oz. Water-Soluble Solder Paste Flux. I don’t like how soft and ...
Quality :
1
Seeds Program Review
(What's this)
This review is for Oatey H-20 1.7 oz. Water-Soluble Solder Paste Flux. I don’t like how soft and liquid the product is (and I did not have it stored in a particularly hot area). In my opinion it doesn’t work as easily as a more solid paste flux; I got frustrated with it and opted for the paste flux I had on hand. I’m really disappointed because I frequently use Oatey products and haven’t had significant issues with them. One other thing, which is somewhat minor; but an annoyance. When I tried to put the lid back on the container, it would not seal. I’m not sure why (I cleaned the rim and tried again). I ended up pushing the lid as far as I could on the container and then banging it, upside down, on my work bench. It did finally seal. Not sure what that was all about, but I was already unhappy with the product so it just added to my frustration.
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