L PATTERN 24Pack Canning Lids Regular Mouth Mason Jar Lids Jar Tops Split-Type Canning Lids Compatible with Regular Mouth Mason Jar 70mm Lids only

10 Reasons Your Canning Jars Aren’t Sealing 1: The Wrong Jars/Lids - not for canning.  2: A chipped or uneven jar rim will prevent the lids sealing.Check it before use use with your finger. 3: Old Screw Bands:may rusty or bent, seal failed 4: Loose Bands:the lid fails to seat onto the jar rim. Too Tight Bands: air not be able to escape,seal failed. 5: Dirty Jar Rims: Wipe the rim of each jar before you apply the lid and ring. 6:Overflowing Jars During Processing:making sure to leave enough space between contents and jar rim 7: Not Enough Heat to force the air out of the jars  8: Tampering With Jars As They’re Cooling Forced release of pressure can “pull” the liquid out of the jars, leaving bits of food on the sealing rim and stopping the seal. 9: Air Bubbles in Foods For dense foods,removing any trapped air bubbles prior to sealing by slipping a butter knife or rubber spatula down into the bubble to give it a pathway to escape. 10: Wrong canning procedures Checking some bloggers' usage videos before use will greatly reduce the probability of sealing failure,any further question or need, please feel free to contact us.We strive to supply with better product and service.