Selenium shot is primarily used in the electronics industry, especially in the production of semiconductor devices. It serves as a key material in the manufacturing of rectifiers, which convert alternating current (AC) to direct current (DC). It is also utilized in the production of photovoltaic cells and solar panels due to its photoconductive properties, enhancing the efficiency of light-to-electricity conversion.

In metallurgy, selenium shot is added to copper, lead, and brass alloys to improve machinability, wear resistance, and corrosion resistance. It enhances the performance and durability of electrical contacts and connectors.

Selenium shot is further employed in the glass industry to decolorize glass (e.g., removing green tint from iron impurities) or to impart a deep red or pink tint, depending on the concentration and composition. It acts as a colorant and stabilizer in certain types of specialty glass.

Additionally, it is used in the production of certain types of pigments for ceramics and plastics, providing vibrant red and orange shades. Its role in chemical catalysts and research settings supports various synthesis processes where high-purity selenium is required.

In the rubber industry, selenium shot serves as a vulcanization accelerator or agent, aiding in the curing process and improving the durability and elasticity of rubber products.