Seal Your Jars Perfectly with Pressure-Sensitive Cap Seals

These advanced jar seals are the perfect solution for preserving your favorite herbs, spices, and other dry goods. The pressure-sensitive foam liner creates a stronger seal than regular foam, ensuring your contents stay fresh and protected. No tools or heat are required—just center the insert on your jar, apply the cap, and wait 24 hours for a secure, lasting seal.

Ideal for use with wide-mouth glass jars and plastic ball mason canning jars, these inserts are compatible with a variety of containers. The torque-activated design ensures a firm seal, making them a reliable choice for home canning. Say goodbye to messy kitchens and hello to organized storage with these must-have sealing inserts. Each set includes 100 foam inserts for all your preserving needs.