Key technical points for the installation and use of mechanical seals

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1. The radial runout of the equipment’s rotating shaft should be ≤0.04 millimeters, while the axial displacement must not exceed 0.1 millimeters. 2. The sealing area of the equipment must remain clean during installation; the sealing components should be cleaned, and the sealing surfaces must be intact without any damage, in order to prevent impurities and dust from entering the sealing area； 3. During installation, it is strictly prohibited to strike or hit the device, to avoid damaging the mechanical seal friction pair and resulting in a loss of sealing performance ； 4. During installation, a layer of clean machine oil should be applied to the surfaces in contact with the seal to ensure smooth installation ； 5. When installing the static ring gland, the screws must be tightened evenly to ensure that the end face of the static ring is perpendicular to the axis line ； 6. After installation, pushing the moving ring by hand allows it to move freely on the shaft, with a certain degree of elasticity ； 7. After installation, turn the shaft by hand; it should not feel heavier or lighter in any way ； 8. The equipment must be filled with the medium before operation to prevent seal failure due to dry friction ； 9. For crystalline or granular media that are prone to caking, when the medium temperature exceeds 80°C, appropriate measures such as flushing, filtering, cold filtration, and cooling should be taken; for various auxiliary devices, please refer to the relevant standards for mechanical seals