[Three rain valve to recommend Star Products - Mechanical seal] Description: After the plane of the plate and the surface roughness of the calibration standards, require its pressure sand, pressure sand mixture commonly used chemical formula is: chrome corundum grinding powder 20g, stearic acid 0.5g, aviation gasoline 200mL, kerosene 10mL. After the mixture is configured to be placed more than a week then. Pressure sand process is as follows: (1) The plate washed with industrial gasoline, aviation gasoline and then wipe. (2) the mixture was shaken, left to stand for a moment, with a small dropper after inhaling droplets on the plate to make it spread evenly in a thin layer. (3) Put in flat polished M74D-70 mechanical seal, until the adhesive force between the plate large mechanical seals, pressure sand agent is in glossy black, viscous state to, to move forward on the plate when the pressing need to hand, at the same time will from time to time on the plate is rotated 90 °, 180 ° to increase the suction force. (4) pressure sand removed after two plates, sprinkle with a clean dropper aviation gasoline, residual layer with cotton wool wipe, and then one piece with the end plate further pressure sand sand pressure. [Three rain valve to recommend star products - mechanical seals] Description: prototype testing according to the above design ideas, production of a prototype shaft diameter of 320 mm. Currently M74D-50 mechanical seals, China is no standard for this type of technology equipment shaft sealing device, and such equipment "low speed, low pressure, high volume" of the characteristics and type of equipment similar to the reactor. Thus M74D-55 mechanical seal, for a total of prototype reference HG / T2269-2003 "kettle mechanical seal technology" and HG / T 2099-2003 "kettle mechanical seal test specification" and other relevant standards, simulate actual working conditions 125 h of running tests, achieved the desired effect of zero leakage. Chaohu mechanical seal, M74D-45 mechanical seals, mechanical seal, rain (high-quality businesses) are provided by three rain Valve Co., Ltd. of Tianjin. Tianjin three rain Valve Co., Ltd. (www.tjsymf.com) (www.tjsymf.com) is specialized in "mechanical seals, mechanical seal, shaft seal, mechanical seals, seals," the business, companies adhering to the "integrity management, the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Liu rain.