Magnetic, or ferrofluidic, seals use a magnetic field to create an ideal method for transferring rotational motion into vacuum or pressurized environments. Less friction results in high reliability, longer life, and offer an efficient, cost-effective seal solution. They effectively handle high torque transmission, have high speed capability, low drag torque, and smooth motion at low speeds and during start-up.
Ferrofluid seals are used in rotary gas unions & reactive gas seals in vacuum manufacturing applications, as acoustical dampers, and in CVD furnaces and sputtering systems. They’re common in aerospace, semiconductor & solar manufacturing, vacuum coatings and other industries.
S & D Materials has designed, sold and repaired ferrofluidic solutions for over a decade, including seals in feedthroughs, rotary gas unions and host assemblies of all types. We perform both minor repairs and major overhauls. We also support dozens of new and refurbished seals for semi manufacturing tools from Novellus, Axcelis, AMAT, TEL and Varian.