Talk:Sealing wax

Bitumen
The lead paragraph mentions that before sealing wax, the Romans used bitumen for the same purpose. However, this doesn't seem to be mentioned in the sources or in the article on bitumen itself. If anyone can verify this is true, please add it into the article for bitumen as well and add an appropriate citation; otherwise it should be removed from this article.

Hot Seal?
The "Method of Application" section says that a seal should be as hot as the wax to make a clean impression. I don't have access to the reference source, but that does not seem right.

Other sources say to use a chilled seal. I don't want to cite anecdotal evidence, but having tried both methods, I can attest that a hot seal just mushes the wax around and clogs up the channels in the seal, and leaves nothing but a rough, garbled mess behind.

sealing wax was used in laboratories as a "vacuum cement"!?
I googled "vacuum cement" and can't find any meaning. Someone either needs to clarify and explain what that is, or it will be deleted.