ROXULŽ products are mineral wool fiber insulations made from basalt rock and slag. This combination results in a non-combustible product with a melting point of approximately 2150°F (1177°C), which gives it excellent fire resistance properties. ROXUL mineral wool is a water repellent yet vapor permeable material. These rigid mandrel wound pipe sections are strong, preformed mineral wool insulation with excellent thermal performance. SturdiRock™ is ideal for steam and process pipe systems operating at temperatures up to 1400°F (760°C), where energy conservation, personnel protection and fire control are concerns. SturdiRock™ is impregnated to provide high water-repellent characteristics, making it suitable for application in conditions where moisture can penetrate the insulation system. The added density of SturdiRock™ offers superior durability compared to other mineral wool products.