if the bowl is made out of brass its not a good idea to use soft metals.For the bowl use glass or a socket from your tool kit(stainless steel) But the silicone shouldn't be bad because it wont have direct heat on it.
JstUseDaBong Reviewed by JstUseDaBong on . Silicone sealent on a bong? I made a kickass bong with my trumpet mouth piece and the hole was a bit to big... Its indoor/outdoor and heat resistant. Will this be ok? Im too poor to buy a bong ATM. Rating: 5