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Thread: Kraus Strainer Assembly Order?

  1. #1
    Finish Carpenter Knighton's Avatar
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    Default Kraus Strainer Assembly Order?

    I bought a Kraus sink and it came with two strainers. The strainers look different than anything I've seen and I'm a bit confused as to where a couple of parts should go (under sink or over sink). Should the white gasket go A) between the strainer body and the top of the sink or B) on top of the rubber gasket under the sink? Does the white gasket take the place of putty?

    Thanks in advance for your help!

    Knighton
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  2. #2
    Plumber jimbo's Avatar
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    The rubber gasket goes under the sink, and does not take the place of putty. Be sure to use "stainless" putty. The cardboard goes up against the rubber. It acts as a simple friction ring, so when you tighten the nut, it does not "tweak" the rubber out of shape.

  3. #3
    Finish Carpenter Knighton's Avatar
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    Quote Originally Posted by jimbo View Post
    The rubber gasket goes under the sink, and does not take the place of putty. Be sure to use "stainless" putty. The cardboard goes up against the rubber. It acts as a simple friction ring, so when you tighten the nut, it does not "tweak" the rubber out of shape.

    I know the black gasket goes under the sink, but the white gasket (its rubbery/spongy not cardboard) is what im concerned with. Does the white rubbery thing is function the same as cardboard would in other strainers?

    Thanks for the reply
    Last edited by Knighton; 06-20-2012 at 01:48 AM.

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    Plumber jimbo's Avatar
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    If that is not a cardboard gasket, then you need to go back to plan A...read the instructions. It might in fact be for sealing the flange in lieu of putty...but the manufacturer has to tell you that.

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    Moderator & Master Plumber hj's Avatar
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    The black rubber goes under the sink so it will be compressed between the drain and the sink. The white on goes under the trim ring in place of putty, although a drain like this does NOT need putty in the first place. Then the "bolt" is threaded iinto the drain and tightened to seal everything together.
    Licensed residential and commercial plumber

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    Finish Carpenter Knighton's Avatar
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    Quote Originally Posted by jimbo View Post
    If that is not a cardboard gasket, then you need to go back to plan A...read the instructions. It might in fact be for sealing the flange in lieu of putty...but the manufacturer has to tell you that.
    Thats why Im here, there were no instructions regarding the strainer installation and the Kraus website didnt have them either.

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    Finish Carpenter Knighton's Avatar
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    Quote Originally Posted by hj View Post
    The black rubber goes under the sink so it will be compressed between the drain and the sink. The white on goes under the trim ring in place of putty, although a drain like this does NOT need putty in the first place. Then the "bolt" is threaded iinto the drain and tightened to seal everything together.
    Thats what i suspected but wasnt completely sure. Thanks for your help!

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    DIY Senior Member BobL43's Avatar
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    Quote Originally Posted by Knighton View Post
    Thats what i suspected but wasnt completely sure. Thanks for your help!
    Kraus happens to have very good customer support in my recent experiences with them. Call them and see what their intentions are for those.
    I am definitely not a pro plumber, but I am a pro crastinator

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    Finish Carpenter Knighton's Avatar
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    Quote Originally Posted by BobL43 View Post
    Kraus happens to have very good customer support in my recent experiences with them. Call them and see what their intentions are for those.

    I took your advise and called Kraus. Their customer service said the strainer is designed to be used without putty, placing the white gasket between the strainer basket and the top of the sink. However, he explained that putty can be used, but it should only be used between the black gasket and the underside of the sink? He said it was unnecessary, but could be done if "it made me feel better". Apparently, many people have called asking the same question.

    Thanks again to all who replied.

  10. #10
    Moderator & Master Plumber hj's Avatar
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    Putty SHOULD NOT be used between the sink and rubber gasket. And, since that gasket is making the waterproof seal that putty on top of the sink would be used for, the putty, and even the white gasket, are NOT needed.
    Licensed residential and commercial plumber

  11. #11
    DIY Junior Member lubster's Avatar
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    Default Kraus strainer installation

    Quote Originally Posted by Knighton View Post
    I took your advise and called Kraus. Their customer service said the strainer is designed to be used without putty, placing the white gasket between the strainer basket and the top of the sink. However, he explained that putty can be used, but it should only be used between the black gasket and the underside of the sink? He said it was unnecessary, but could be done if "it made me feel better". Apparently, many people have called asking the same question.

    Thanks again to all who replied.
    It was late last night when we finally were able to install our Kraus strainer, only to find that there were not any instructions included, nor were there any on Kraus' website. The white foam gasket and whether to use putty or not were the questions we needed answers to, but Kraus was closed until morning. Searching the web led me to this forum and the answer to our question posted by Knighton. At that late hour, we were quite thankful to find the answer. We installed the strainer as Knighton described above, we did not use any putty, and all of our plumbing is working perfectly. Thank you Knighton and to this forum!

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    DIY Junior Member sarah tubbs's Avatar
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    I also contacted Krause by email, they responded in less than an hour by phone, the white gakset goes directly below the strainer above the sink, black below (do not use the putty on the black gasket) . After hours of research online I decided to ditch the white gasket and go with good old-fashioned plumbers putty. Good luck everyone! I hope I can finally enjoy my sink.
    Last edited by sarah tubbs; 05-03-2013 at 10:28 AM. Reason: new info fr Krause direct call fr their customer service

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