Sight Glass Tubing

[Bunson_Burner]

I've got a 2000L tank that was a beer Brite tank in a former life.

I'd like to use it to store low wines, or possibly for filtering finished into.

As of right now it's got a PVC sight tube that I'll be getting rid of since PVC isn't good for spirits.

Is there a clear flexible sight glass tubing that anyone could recommend?

I'm trying to avoid putting it on load cells.

Thanks y'all,

Andrew