From the brandWe hope that your life will become more convenient and efficient, and we are committed to continuous innovation in sealing products. Not only does our mason jar vacuum sealer save you time and effort when sealing, but it also makes the perfect gift for friends and family. Meet All Your Sealing Needs Mason Jar Vacuum Sealer Kit Vacuum Sealer for Jars Product DescriptionHow to Use Put the mason jar lid on top of the jar (Not suitable for one-piece lids with rings)Press the sealer down firmly, holding it smoothRemove the top mason jar sealer to double the effect by adding a ring lid (ring lid not included in our package)Why can't it be sealed? When filling soft or liquid food, do not overfill the bottle, the less air in the bottle, the longer the sealer will work and the sealing effect will be short.Please check whether the mouth of the mason jar is dry and clean. If there is water or debris at the mouth of the bottle, the mason jar sealer will not be able to seal.The mason jar vacuum sealer did not press into place and did not allow the mouth of the bottle to fully enter the sealer.Mason jars don't match the lids.Please note that frequent use may cause the silicone ring inside the Mason jar vacuum sealer to dislocate, resulting in seal failure, please manually adjust to the original position before use. 【Suitable for two types of Mason jars】The electric Mason jar vacuum sealer contains two sizes of mouth seals for your daily use. To get the standard mouth seal jar, simply insert the red arrow on the standard mouth seal converter, align it with the unlock symbol on the main unit and then insert it inside the silicone ring in the wide mouth seal area and tighten it clockwise, at this point the arrow is aligned with the lock symbol, which indicates a successful installation. 【For all your vacuum sealing needs】Includes an electric vacuum sealer containing a wide mouth sealer, a standard mouth seal converter, 5* wide mouth Mason jar lids, and 5* regular mouth Mason jar lids and user guide. Our food vacuum sealer kit will help you remove the air from your Mason jars and extend the life of your stored food. 【Easy to use】The cordless vacuum sealer with standard mouth sealer converter kit is suitable for wide-mouth and regular-mouth mason jars (mason jars not included). Make sure the electric vacuum sealer is centered and pressed firmly against the lid of the jar, click the button to start the vacuum pump and wait about 40 seconds or more and the air can be evacuated to the seal. Clicking the button again closes the sealer. 【Electric vacuum pump, free your hands】No longer need to use both hands to press the manual vacuum pump ten or twenty times, no longer need to take out a bunch of accessories hose, take out a vacuum machine, so that your desktop clutter, you use our electric vacuum pump, just press the button once, wait 40 seconds or more, you can complete the vacuum seal. 【Portable vacuum sealer】Don't have a vacuum sealer? Don't worry!!! We offer you an electric Mason jar sealer that you can use to extract the air from your Mason jars. The sealer is too big to carry with you when you travel or have a picnic? You can also use this electric sealer instead of it.