First of all, these forums are about vehicle computers, not bathroom fixture repair.
Second of all, you posted in a subforum specifically about products sold in the online store associated with these forums. Duramix 4040 is not sold in the aforementioned online store.
Good luck finding an answer.
I suggest that in the future you look a little deeper into where you request information to insure you're asking pwople who might actually know. Your odds of someone here knowing about this product aren't good. We're computer geeks & car electronics enthusiasts, not handymen or contractors.