Pump Tube idea

Has anyone used an empty silicone tube for a pump cylinder?

Yes, not me, but I have seen it as a method. A guy was on here a while back looking for a special silicone caulk that came in a clear tube, just for that purpose. If I can find the brand name or think of it, or maybe someone else, I will get back to you.

Found it. Yes the search function does work!

Lexel caulk (because it has a clear tube)