Shop Thermoseal at BPS Supply Group. Our online selection includes gasket sheets and more. Thermoseal is a trusted brand renowned for its high-quality gasket and sealing solutions. Their top-selling products, including Klinger C4430 and Klinger C4400, are widely used in various industrial applications, such as oil and gas, chemical processing, and automotive, to create reliable and durable seals. What sets Thermoseal apart is its commitment to precision engineering and innovative materials, ensuring that their gaskets and seals deliver superior performance, resist extreme temperatures and pressures, and provide long-lasting, leak-free solutions for critical applications.