Asked on Jun 03, 2018

How can I revive hardened plumber's putty?

by Mikeandshirley2
I bougth plumers putty and only used a little ,that was a year ago- How can I revive the hardened putty

  12 answers
  • Mogie Mogie on Jun 03, 2018

    Linseed oil. Very little plumbers' putty is used anymore. Caulk, both latex and silicone are what they seem to be going thing.

  • Bijous Bijous on Jun 03, 2018

    It's a gonner. Use as a door stop and buy new. Going forward, put it in the house. After you've finished your project(s), press plastic wrap onto the top and up the sides, sealing well. Make sure top is on tightly. Will last a lot longer.

  • Deb K Deb K on Jun 03, 2018

    The best way to re-soften plumber's putty is to pour oil directly on top of it, replace the lid and wait. After a few days, open the container and stir. Check the container for the list of ingredients and match the oil used by the manufacturer. Avoid putting the putty in the microwave

    • See 1 previous
    • Deb K Deb K on Sep 28, 2022

      I have not put it in the microwave, I think it would make it even harder. You wan to use an oil that is listed in the ingredients.

  • Johnavallance82 Johnavallance82 on Jun 03, 2018

    Once hardened it will never be make soft again. Maybe smaller quantity next time if poss.....

  • Jcraw Jcraw on Jun 03, 2018

    Lowe’s sells a tube, easily closed, for less than $5.

    There are plastic tubs for about $3.

  • Barbara Binstock Barbara Binstock on Jan 18, 2022

    WD40 is the instant cure. Work it in a little and there's your putty.

    • Val cane Val cane on Sep 27, 2022

      Sounds promising - but WD40 is pretty toxic. Can you work it with your hands afterwards?

  • I would buy new, you wouldn't want to mix anything with it that will compromise its effectiveness.

  • Mogie Mogie on Oct 01, 2022

    Linseed oil.

  • C C on Jan 24, 2023

    Has anyone used mineral oil. It is used on cutting boards to protect it and goes into lip balms.

  • San51581820 San51581820 on Aug 22, 2023

    I've faced a similar dilemma with my plumber's putty. What I've learned is that the longevity and effectiveness of the putty can depend on how it's stored. Ideally, it should be in a cool, dry place. If you're unsure about using the old putty, maybe it's time for a professional opinion before diving into any DIY repairs. I recently reached out to a plumber near denver who gave me fantastic advice on plumbing essentials and their shelf life. They're quite knowledgeable, and I'm sure they'd offer some insights if you're in the area.

  • Janice Janice on Aug 22, 2023

    I'd start over with a tube of plumber's putty.

  • Hi! You can try putting water and lotion into it. Hope this helps!