In this video, we demonstrate the practical features and sealing capabilities of small, leak-proof PET plastic jars ideal for sweets, nuts, and other dry foods. Watch as we test the airtight screw lid and explain the two sealing options—aluminum foil and pressure-sensitive seals—to help you understand which method suits your packaging needs. We also show how these food-grade containers can be customized in shape, size, and design for your business.