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…
“These people were extremely helpful in taking me through replacing a 25 year old hard water frozen cartridge on my Philrich sink faucet. They were able to identify the correct part I needed from a photo I sent (I had it figured out wrong). I was pleasantly surprised they had an obscure part like this, but they also told me how to extract the old one when I couldn’t get it out. They said to unscrew it after I had concluded from YouTube the old cartridge was supposed to just slide out. It threaded out as they said and saved me buying a cartridge extractor and a hernia. The whole experience has been excellent. ”
-Pete L.
03/10/2026