Installation of mechanical seal of pump and mechanical seal with part of the technical requirements are as follows: mechanical seal is to belong to a relatively high precision mechanical parts, the correct installation and operation has a great influence on the service life of it.We usually in accordance with the standards prescribed by the oil and chemical.Installation of mechanical seal of pump and mechanical seal with part of the technical requirements are as follows:

1. The shaft bending: the biggest is not greater than 0.05 mm;

2. The pendulum of rotor vibration: ring sealing ring near the collar is not greater than 0.06 mm;

3. The shaft axial momentum does not allow more than + / - 0.5 mm, if the shaft sleeve, do not allow the shaft sleeve is loose;

4. The alignment error of coupling: for coupling is not greater than 0.08 ~ 0.08 mm (P2008C), for the elastic coupling is not more than 0.05 ~ 0.06 mm;(practice end jumped diameter < 0.05, < 0.10)

5. Gland (static ring) with sealing seam allowance of shaft centerline concentricity tolerance 0.05 mm, with gasket contact plane on the center line of the value of the vertical degree of tolerance of 0.03 ~ 0.05 mm, if can not meet the requirements, the sealed cavity to carry on the processing;

6. Installation ring seal shaft sleeve ends, as well as the installation of static seal gland (or shell) should end chamfering, and smooth.

7. Carefully when installation, remove the mechanical seal, it is forbidden to use the hammer and flat, so as not to damage the sealing element.If the scale removing not bottom, should be cleaned before disassembly.

8. If on both ends of the pump with mechanical seal, in assembly, disassembly process to take care of each other, to prevent the attend.

9. To the running of the mechanical seal, every gland loose moves in the seal, the dynamic and static ring parts must be replaced, should not be to tighten the continue to use again.Loose because of friction pair after the original changes occurred in the running track will contact sealing is easily damaged.

The use of mechanical seals

Seals is to prevent liquid or solid particles from leakage between adjacent joint surface, and prevent the impurities such as dust and moisture into the inside of the machine equipment material components or parts

1) To choose the appropriate packing material and hydraulic oil, and the working temperature of the adaptability of the compatibility of oil.

2) Seal the geometry precision of relative sliding parts (concentricity) high material (e.g., hard chromium plating) and surface roughness is fine can prolong service life.

A. Used for hydraulic pump, motor shaft oil seal not only requires the sliding surface roughness within the Ra is 0.25 m, but also for hard chromium plating on the surface, when used in the specific need according to the specific situation adjust oil seal lip radial force of spring, the elastic moderation, even when installation and installed with a sleeve or shims to protect the sealing ring, lest his lips, twisting, twisted, sliding out in spring. 

B. The hydraulic cylinder inner surface rolling processing methods, not only to improve the surface roughness, and make its surface has carried on the cold work hardening treatment, is helpful to extend the service life of sealing ring.In addition, the use of pressure, the length of sliding surface and the kind of life also has very big effect.Therefore, decided to missile d etection of time should be based on these conditions.

3) Requires sealing surface lubrication, prevent the contamination of shooting in good status.Use to clean level of the oil and the correct installation method, is also the necessary conditions.

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