Question about Bunn BT10B Coffee Maker

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Bunn BT10-B silicone washer

I took the top off my coffee maker to clean the hard-water scum inside the reservoir and underneath, and found the black washer was ripped. I'm having a hard time finding a replacement. Since I'm not sure that just any washer will work (considering the heat and water), I don't want to put one from around the house in it. I can, and have, been sent the replacement kit to fix the leak concerning the recall of some Bunn coffee makers; but this black silicone/rubber washer isn't included with the kit. Does anyone know what I'm talking about and how I can find that particular washer?

Thanks for any help offered!

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  • T. C. Dollar
    T. C. Dollar Mar 25, 2010

    Hi- Try going to the Bunn website, , and click on their Customer Service link. There, you can either call their toll-free number or write to them about your problem from there. They are very helpful and pretty quick with a response.

    Hope this helps!



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Yes, you can get a washer from your local Bunn repair shop. For a list of repair facilities in your area, go to And yes, the heat is a problem, so you can't use just any washer.

Posted on Feb 12, 2009

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Posted on Oct 31, 2012


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Posted on Jan 02, 2017

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SOURCE: Bunn B10-B leaks

I used Foxhollowrun's solution and went to my local hardware store (Menard's). You can purchase 3/4" Hole Grommets typically found in the electrical department. The brand I purchased was Gardner Bender Model GHG-1575 3/4" Hole Grommets. Here is all that you need to do (very quick and easy):

1) Break away the brittle pieces from the original hole in the resevoir.

2) Remove the old rubber / plastic washers - I found I didn't need them. However, hang onto your metal washer that the drain screw goes through.

3) Slip the 3/4" grommet around the hole.

4) Place the original metal washer on top of the grommet.

5) Screw the drain screw back into the heater which will seal the grommet via pressure. Be sure not to over tighten it - I just snugged mine up.

6) Put everything back together, rinse several pots of water through it, check for leaks, and you should be good to go.

As Foxhollowrun indicated, you may need to tighten the drain screw a bit if you do have a leak. I lucked out - it worked the first time. I believe it cost me about $2 to fix. Also, I did not need any caulk. If you do use caulk, I was told you need to use food-grade caulk.

One last note - as Foxhollowrun indicated, the grommets are quick thick which is why I removed all of the old washers. The original metal washer is just thin enough to allow the drain screw to be reinstalled.

Thanks to Foxhollowrun for a great remedy!

Posted on Mar 23, 2010

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