Industrial Purpose Cylindrical Shaped Sleeves are available in diameters ranging from 3” to 12” in both open and blind type pattern. These Cylindrical Shaped Sleeves are suitable for all iron and steel castings. These Sleeves are a range of highly exothermic cum insulating riser linings that are offered in cylindrical shape. Industrial Purpose Cylindrical Shaped Sleeves have a low density and come in different sizes to suit specific requirement.