Im looking for flux to use when soldering circuit boards will this work?

If you are looking for flux to use for soldering circuit boards, you need to consider looking elsewhere. Will it "work", sure, but it may damage the board you're working on. This kind of flux is acid based, it's meant for pipe fitting, not for electronics. The same goes for stained glass, the acids won't damage it. It says so in its description "ideal for use with 95/5 and other common solders." In electronics soldering, leaded solder is preferred. It flows a lot easier, and a long as you don't eat it you won't be poisoned.

Is this an acid flux? thank you.

I Believe do. I got it to solder a glass piece but haven’t used it yet

Will this work with harris sta-brite solder (96% tin/4% silver, melts at 430 f)?

I use this with a Wen 250 watt soldering gun , and it works Great with Light gage solder [ I use it for rewiring chores all the Time ]

Rectorseal Corp Paste Flux 4 Oz | Desertcart Romania

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

166 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Romania.

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Description

🛠️ Flux like a pro, solder with confidence!

BUILT TO LAST - Waterproof and durable, ensuring strong, long-lasting solder joints even in demanding conditions.
TRUSTED BY PROS - Preferred by HVAC, plumbing, electrical, and construction experts for reliable results.
SAFE ECO FRIENDLY - Lead and acid free formula protects you and the environment without compromising performance.
EFFORTLESS APPLICATION - Smooth paste consistency for precise, mess-free soldering every time.
VERSATILE METAL COMPATIBILITY - Works seamlessly on copper, tin, zinc, nickel, and sheet lead—perfect for diverse projects.

Rectorseal Corp Paste Flux 4 Oz is a professional-grade, lead and acid free soldering paste designed for use with 95/5 and other common solders. Its smooth, waterproof formula ensures easy application and strong, reliable joints across multiple metals, making it a trusted choice for HVAC, plumbing, electrical, and construction trades.

Specifications

ASIN	B0013B1XJW
Best Sellers Rank	354,579 in DIY & Tools ( See Top 100 in DIY & Tools ) 56 in Solder Fluxes
Brand	Rectorseal
Colour	Clear
Compatible Material	Ceramic, Glass, Metal, Plastic, Wood
Container Type	Tube
Country Of Origin	USA
Customer Reviews	4.6 out of 5 stars 379 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	00052541140103
Item Form	Paste
Item Package Quantity	1
Item Volume	4 Fluid Ounces
Item Weight	4 Ounces
Item form	Paste
Manufacturer	The Rectorseal Corporation
Manufacturer Part Number	14010
Material	Resin
Model Number	14010
Number of Pieces	1
Other Special Features of the Product	Waterproof
Special feature	Waterproof
Specific Uses For Product	Electronics Repair, Construction
Specific uses for product	Electronics Repair, Construction
UPC	052541140103
Unit Count	113.3981 gram
Viscosity Level	High
Water Resistance Level	Waterproof

Reviews

G**Y

Proper flux

Good flux.Tins up nicely.

25.06.2016

L**O

Buen producto

Buen producto ,precio elevado

4.08.2022

T**Y

Works well

Good price and product!

18.12.2023

A**R

Works perfectly

I dont do alot of soddering. Just the odd repair. This was the best paste I have ever used. Not a single bead dripped from where I placed the weld.

7.03.2020

S**N

Works great

I really like how it stays on the glass and doesn’t dry too fast

28.09.2024

C**.

So glad I purchased it.

Excellent prroduct, much easier to use and clean up than liquid flux. Wanted to try it after seeing high recommendations on stain glass websites.

27.04.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

166 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Romania.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago