🍃 12 Pack Burp Lid Curing Kit - Suitable for All Wide Mouth Mason Jars - A Must-Have for Home Harvesting. Includes 12 Lids and Extraction Pump. Vacuum Sealed for Optimal Curing Results. Review

Good idea in theory, they just don't hold vacuum. I pump them daily but the next day when I try to pop the caps open there is no vacuum seal. I would not recommend these non-functional, overpriced spit caps. Replaced glass jar lids back.

What I like about these lids is that you burp when you stop taking the lids off. What I dislike about lids is that if you don't center the air valve in the lid when inflating, air can leak out due to improper sealing. S like lol overall I will buy again.

I tested 2 different lids with the same results. Nothing. First, the lids don't sit straight on the can, so they don't provide a good seal in the first place. I followed the directions, pumped once, then two, then three, then ten times, and still nothing. There is no vacuum seal. I would never recommend her. They return.

The vacuum lid closure system is finally here and works exceptionally well for getting a perfect crop once cured. It is recommended to use 62% humidity bags in storage jars and these lids will maintain a constant temperature and humidity for at least a year. And yes, the seals hold up fairly well and are easy to freshen up with the included hand pump.

I bought these covers 3 months ago and haven't used them since. Unfortunately I cannot return them so I must advise buyers that the internal threads do not match the wide neck of the bullet as advertised. When the can is rotated, the ball catches on the plastic threads of the Burb lid and begins to destroy it. These lids do not hold vacuum! DO NOT BUY!

First, the price of this product is too high. At this price point one would expect a higher quality pump to be included in the kit. For what it's worth the product has worked for a few applications after which the seals could no longer hold an adequate vacuum. Ironically, they worked long enough to close Revane's return window. After reading some of the reviews on this product, the failure rate seems a bit low and might work for most. But not me. Lucky you?