Fits well and doesn't leak
"We switched to this cap for our natural tanning oil. We tested many different ones and this one closes and doesn't leak. Several others we tested didn't have a very solid close/seal when the top flips shut. You can't use a pressure seal with this lid. The plastic fits into the neck so it has a very nice seal from bottle neck to lid. You will want to tightening it then give it another bit of twist to get it to seat into the neck of the bottle. We ship all over the country and it doesn't leak. Have used about 8,000 so far so I'm very happy."

