Pressure Sensitive Torque Activated Cap Seals - 70mm For Mason Jars, 50 Pack

About This Product

Home canners and small business owners, these pressure-sensitive cap seals are seriously game-changing for preserving your dry goods! These 70mm (2.75 inch) polystyrene foam liners are specifically designed for regular mouth Ball mason jars and similar containers with 2 3/4 inch outer diameter necks. The torque-activated adhesive means no special equipment needed - no induction sealers, no heat guns, no shrink bands. Just clean your jar rim thoroughly with alcohol, center the seal (white side down, red lettering up), screw on your cap tightly, and wait about 24 hours for the adhesive to fully set. The beauty of these seals is they create an actual airtight barrier that prevents leaks and keeps your herbs, spices, teas, powders, and other dry products fresh way longer than basic foam liners alone. They work on both glass and plastic jars with lined or unlined caps. Quick tips: don't overfill your containers, avoid using with oily products, and once you remove a seal, it can't be reapplied. Made right here in the USA, these 50 seals give you plenty for multiple batches of preserving. If you're tired of your stored goods losing freshness or getting contaminated, these professional-grade seals provide that extra layer of protection that makes all the difference in shelf life and product quality.