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Thread: Copper Washers

  1. #1

    Copper Washers

    I have read that if you heat up a copper sump plug type washer to glowing it will re-anneal (sp) it making it good to go again.Any one know if this is correct? Ordinarily I would simply buy a new one but the size is not available off the shelf and the source of a genuine one is bloody hopeless.

  2. #2

    Re: Copper Washers

    Sump washers are squash washers, annealing again (which means make soft) will probably not expand it again to allow it to squash flat to seal off.

  3. #3

    Re: Copper Washers

    heat up to cherry red and quench in water will make it soft again
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