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Oatey No. 5 Paste Flux is a petrolatum-based flux designed to provide superior wetting properties for better solder flow. It can be used with most soft solders, 100% lead-free and safe for use on potable water applications. No. 5 Paste Flux's formula prevents copper piping turning green and is excellent for large diameter copper pipe applications. Oatey products have earned the trust of plumbing professionals for over 100 years.
From the Manufacturer
Oatey products can be found in residential and commercial applications and have achieved excellent brand name recognition with consumers. All products are backed with the highest quality technical and customer support programs in the industry
John L.
Reviewed in the United States on January 16, 2024
This is way better flux than the crap HD and Lowe’s sell . This is professional level with much better results than the big box stuff.
Joe Kiras
Reviewed in the United States on October 15, 2015
Works great
Mike Galloway
Reviewed in the United States on September 2, 2014
Good value
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