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What is the right viscosity of a silicone grease to lubricate between the ceramic-discs of single lever mixer faucet? NLGI-00,NLGI 1,NLGI 2 etc.


  • Have you checked the manufacturer's documentation on what the proper product to use is? That would be my starting point.
    – jwh20
    Oct 14, 2019 at 13:58
  • No,unfortunately,i couldn't achieve the manufacturer's documentation.I would like to know,in general,what should the viscosity be,when applying it between ceramic-discs?It doesn't matter which company made it.ceramic-discs made of ceramic in all brands.The question is what is the viscosity of the grease that should use in ceramic disc?
    – xchcui
    Oct 14, 2019 at 14:09
  • Hello, and welcome to Home Improvement. It's a little hard to understand your post; would you spend a little time fixing capitalization and sentences, and splitting it into a paragraph or two? And, you should probably take our tour so you'll know how best to participate here. Oct 14, 2019 at 18:54
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    Why do you feel you need to break open that unit and "lubricate between the ceramic-discs that are located inside the plastic cartridge of a single lever mixer faucet." ? I would assume that if the manufacturer wanted you to do that they would have given you the instruction and info to do it. ? Potable or Portable ?
    – Alaska Man
    Oct 14, 2019 at 19:27
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    Silicone grease is silicone grease, if there were a special requirement, the manufacturer's documents and/or website would be the place to look. Some brands even use Teflon lubricants... the only thing that usually matters, is that it be an approved food grade lubricant.
    – tahwos
    Oct 15, 2019 at 1:16

1 Answer 1


The spec sheet for Molykote 7508 valve grease says viscosity is 30,000 to 85,000 mPas

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