Recycling Industrial Hikvision CCD Cameras Company, the dry cylinder sleeve does not come into direct contact with the coolant. Its wall thickness is typically 2-3mm, and both the outer surface and the inner surface of the cylinder sleeve seat are precision machined for necessary positioning accuracy, making it easy to disassemble and assemble. The advantages of the dry cylinder sleeve are its high rigidity and small center distance, as well as its light weight and simple processing technology. However, the drawback is its poor heat transfer, leading to uneven temperature distribution, which can easily cause localized deformation.