Founded in 1952, Beyer & Otto is a dynamic and innovative company based in Germany and shipping to 40 countries around the world. We’re proud to carry their manual sealant gun in one option and pneumatic sealant gun in two options. All three are manufactured for the use of Semco and Techcon cartridges. They are also designed with lightweight, retractable holder systems. One reason we recommend Beyer & Otto sealant guns is because they are both ergonomic as well as tough and durable. They get the job done right the first time.