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. Safe for use on potable water applications. Oatey products have earned the trust of plumbing professional for over 100 years. Made in the USA.
Oatey No. 5 Lead Free Solder Paste Flux 4oz
- For warranty product details, refer to the Oatey Limited Warranty document
- 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
- 100% lead-free paste flux cleans and fluxes copper piping to provide uniform solder flow
- Petroleum base provides cleaning effectiveness
- NSF standard 14 (performance) and standard 61 (health effects) certified
- Material is safe for use in potable water applications
- Includes brush for easy flux application
30013
UPC:038753300139
Related Documents
Oatey No. 5 Flux Paste Product Specification Sheet
Common questions about this product
Yes, this is the OEM recommended part.
WHAT OUR CUSTOMERS SAY…
“I was very happy with Noel’s Plumbing. I was searching for a fairly rare part and saw it listed on their website. After placing my order, I was informed that the item was actually on backorder. Noel’s Plumbing was upfront and honest right away, letting me know it might take some time to arrive.
Throughout the wait, they consistently kept me updated, which I really appreciated. When the part finally came in, they shipped it out immediately. It arrived exactly as described and was precisely what I needed.
Excellent communication, honesty, and follow-through. Thank you, Noel’s Plumbing! ”
-Dave F.
04/04/2026