The DGYF series portable induction sealing machine utilizes electro magnetic induction principle to produce instant high heat to melt aluminum foil. Then it adheres to the bung hole, reaching the aim of wet-proof, leakage-proof, mildew-proof and extending preservation time. Now it is widely used as sealing package machine in industries such as pharmaceuticals, pesticides, pesticides, lubricant and cosmetics etc. DGYF-S500A SEALING DIAMTER 20~100MM