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I guess the title says it all. =) I'm planning to replace my kitchen sink faucet. What type of sealant should I use for the base of the new sink faucet?

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up vote 10 down vote accepted

Many facuets come with a rubber gasket, so you don't need any sealant, just install the gasket.

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Yup, read the instructions that come with the kitchen faucet before you go for the plumber's putty... you might not need any extra sealant. – Jeff Widmer Nov 15 '10 at 1:33
Thanks! This turned out to be the case. – Mike B Nov 15 '10 at 15:44

the old standard is plumber's putty. this can be used on most surfaces and laminates. If your counter top is a natural stone, especially marble, plumber's putty could stain it. Check with the stone vendor to be sure to use the proper sealant that will not stain the counters.

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For the faucets I recently installed, they came with a plastic gasket, but also recommended that plumbers putty be used between the plastic and the sink. – MarkD Nov 14 '10 at 22:05
There are Plumbers Putty formulations that are non-staining (e.g. Sta-Put Ultra). They are also safe to use on plastics where a traditional oil-based Plumbers Putty would damage it. – msemack Feb 22 '11 at 13:51

Plumber's Putty. Read the manufacturer's instructions just in case. Plumbers Putty is less than 2 dollars at Home Depot so get it just in case (you won't be out much money either way).

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