KAST Silicone is a silicone manufacturing and development company.

The company specializes in silicone tubing, seals, and gaskets.KAST also develops and produces components for medical devices as well as finished products designed according to customer specifications.

One of the company's products, Breasy, is an inhalation mask specifically designed to be used by infants and children for aerosol drug-delivery procedures.

Breasy is intended to make the inhalation process simpler, more effective, and more comfortable for children and parents.KAST also manufactures for the UK brand Mothercare and provides products for large irrigation systems.

The company offers a wide scope of solutions for a diverse range of applications at all stages, from design to mass production and packaging.