Flexible elastomeric thermal insulator with a smooth skin on one side which forms the outer exposed insulated surface. Used in applications such as: insulating duct work, large piping and fittings, air handling units, tanks, and vessels. Specifications include: higher use temperature limit: 220° F / 104° C, lower use temperature limit: -40° F / -40° C, flame and smoke rating: 25/50, and water absorption: 6% by weight. Thickness recommendations based on conditions, mild conditions: 80° F / 26.7° C / 50% RH, normal conditions: 86° F / 30° C / 70% RH, severe conditions: 90° F / 32.2° C / 80% RH.