Heavy-density wirebrush spheres are constructed of 8 pound per cubic foot density foam, coated with polyurethane elastomer in criss-cross pattern, and equipped with wirebrush straps. They are used for heavy cleaning applications for buildup removal. WARNING: This type of sphere is designed for very aggressive heavy-duty cleaning applications. However, the sealing capabilities are poor. The SPH-8W should be immediately following with a bare sphere or swab in order to help seal. If used alone, it will require substantial volumes in order to propel the sphere. Options and other configurations include customized diameters for special pigging applications.
