Careful to buy the right putty if you have a stainless steel sink you can use either kind of putty if you have a granite composite sink you need putty that will not stain the sink.
Can i use plumbers putty on granite composite sink.
However i have seen many plumber s to try puty.
Why is plumber s putty needed.
Easy to use and easy to remove plumber s putty creates a watertight seal that should never dry out.
In this episode of repair and replace vance shows how to properly use plumber s putty on a bathroom sink drain.
When you need to seal a sink rim faucet or drain there s no better choice.
Sometimes its fine sometimes it leached oil into the sink or counter staining it.
As a licence master plumber i use plumbers putty all the time to seal drains in sinks and baths.
Plumbers putty is most often used to put together sinks and seal them to prevent water leaks.
That or make sure the putty that you are using is non staining.
Two different types of plumbers putty.
Unless the manufacturer of your composite says that it s safe it s best to just assume it isn t and treat it like you would regular granite.
Did you look at the manufacturers manual.
Most of the time its recommended install with clear silicone.
I would take the safe route and just use silicone since i ve seen what plumbers putty can do on granite.