Review on DOT/UN Approved No-Spill 6160 Replacement Cap for 5 Gallon Can - Mess-Free and Reliable by Robert Diaz

I used the o-ring from the spout to prevent leakage. Now I need to find replacement spout O-rings to fix the defect. It certainly can't be approved by the DOT if it's leaking. I'm waiting for the seller to tell me if it should have an o-ring. I contacted the seller and he sent a new replacement cap with o-ring. Alternatively, I took the lid to Ace Hardware and found a matching o-ring for 65 cents. All is well.