Helps prevent unauthorized access Tamper evidence for your valuable product Choice of steel, polyethylene or aluminum Fits round-head type steel plugs Durable capseals crimp over drum plugs and provide security for your finished product or stored raw materials. Once crimped in place, they must be destroyed to be removed. Built-in gasket provides extra sealing power to prevent leaks. Requires sealing tool, order separately. Choice of plain white color or attention-getting "Sealed-Protected" decoration.