Pillar No. 6650 For high temperature & high pressure valves. Construction & Features: Free-size packing of a tape shape made by corrugating both sides of all graphite sheet. It can be wound and formed in the stuffing boxes of any size of valve. Performance: Temperature –240oC to 400oC. Applications: For water, steam, oils, oil gas, solvents, heat transfer oil, LNG, strong acids and strong alkalis.