Manual Jar Sealer - Simplified Vacuum Sealing. Extend the freshness of your food, make quick marinades, and prepare your camping supplies with this manual bell-shaped jar sealer. Simple, robust, and requiring no electricity, it's the ideal tool for vacuum sealing Mason jars with rubber gaskets. Simple and efficient principle for optimal preservation: Place the moistened gasket on the filled jar, put on the glass lid, then place the bell on top. By manually pumping the handle, you remove the air from the jar. The external atmospheric pressure then presses the lid against the gasket, creating an airtight seal. A central indicator (button) confirms the vacuum seal. Total independence and portability: No power outlet, no batteries. Its purely mechanical operation makes it perfect for use in the kitchen, in a motorhome, in the countryside, or in a canning workshop. Its long handle provides good leverage for easy pumping. Compatibility and robustness: Designed primarily for jars with rubber gaskets and glass lids. Its construction in lacquered steel and ABS makes it practically indestructible. It cleans easily with a damp cloth. Specifications: Type: Manual bell-type vacuum sealer with pump Material: Steel body, ABS handle and base Principle: Creates a vacuum by manual pumping Compatibility: Mason jars with rubber gaskets (standard sizes) Use: Vacuum sealing of dry or moist foods, dehydration, marinades Advantage: No energy consumption, portable, simple