Precision Board High Density Urethane (PBLT) from Coastal Enterprises is a “closed cell” rigid polyurethane product made specifically for applications of up to 200° F continuous exposure. PBLT High Density Urethane is available in a wide range of standard sheet sizes and standard densities and can be cut or bonded into a variety of shapes for final machining or shaping. You can get a free sample or request a quote. Technical support is available at 800-845-0745.