What is this?

Just got some more heat tape in from RBI. What are the little black rubber squares with one sticky side used for. Never seen them before. ???

The little black clips you put over the connection site those things?

Spacers?

My heat tape from RBI will be here tomorrow. You place it over the connectors to help insulate your conduction. It's a lot like electrical tape in function.

Ok thanks. Thought so. Tey didnt come with it when i got my other heat tape from beanfarm.