Machine for the sealing of preformed plastic containers. Suitable for use in food industry (production of cheese, fish, meat, sweets, ice-cream, fresh pastry and in restaurants). Simple to use, it is also easy to clean, accessible on all sides and requires low maintenance. Its flexibility and quick format change make it adaptable to different production requirements. The structure is entirely of stainless steel AISI 316, equipped with top quality accessories and programmed by Siemens PLC. A vast assortment of accessories allows to fulfill the most varied requirements. The sealing heads are interchangeable with those of the SAT 50 machine.