Airlock won't stay in carboy

2018-10-22 20:55:53

This airlock won't stay in my 5-gal glass carboy.

https://morewinemaking.com/products/universal-stopper-hole.html

I've tried drying out the bung hole and also the bung outer edge, but it still slowly rises and pops out. This is my masking tape hack to hold it down. Are there better ones?

What is the proper procedure for installing airlocks?