Waterproof Sealant

[leester polfus]

Hi All,
Can somebody tell me the name of the Black/Grey rubbery brush on stuff used to seal ballast tanks and pool overflow weirs. My local yapi market was non to clear.
Thanks in advance.

[Mollie the cat]

Weber saint gobain is says on my huge bucket, bought it from Coban on the East side about 400 TL I think it was?

[Soner]

I remember there were two things you had to mix, a cement and a liquid. Go to Çoban in Girne, they sell the stuff and will tell you how to mix. Check the expiration dates.