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TRYMER PIR (polyisocyanurate) is a closed-cell, foam insulation for industrial pipes, vessels, and equipment. TRYMER PIR can be used in applications that operate at temperatures ranging from -297°F to 300°F (-183°C to 148°C). Additionally, TRYMER PIR is offered in a variety of different densities and compressive strengths to ensure the product consistency is suited for the unique needs of a variety of applications. TRYMER PIR features one of the lowest ambient k-factors among all pipe insulations: 0.19 BTU · in/hr · ft2 · °F at 75°F mean temperature (0.027 W/m · °C at 24°C).