[SiliconeSword]

It doesn't matter if you use a sorbo pad that's a little smaller

 

[SiliconeSword]

Sorbo will actually compress over time, so you're definitely better off with whatever rubber washer you can find at a hardware store

 

[SiliconeSword]

Must have been some sketchy sorbo my friend had, or maybe it wasn't sorbo.
I still feel like I heard that somewhere