Yontree Portable Plastic Bag Impluse Sealer Sealing Tool Mini Bags Heat Sealer for Snack Bags Plastic Bags This plastic bag sealer is practical, handy and convenient, which can be used to seal the plastic bags. It is made of ABS and metal. As a result of its mini size, it not only helps for sealing your snack bags, but is also ideal for liquid, it won't leak.