Adjustable Manual Carton Sealers Adjustable Manual Carton Sealers Entry level automation solution. Manual adjust to carton size. Operator fed and folds flaps of boxes. For applications where one size box is sealed for a given sealing shift. MTD Semi-Automatic New telescopic dual mast top driven sealer designed for durability MSD Semi-Automatic Our most popular machine designed for uniform carton sealing application. MBD Semi-Auto Economical Bottom Belt Sealer. MQ Semi-Automatic Four belt system allows for heavy duty applications.