As consumers to buy the product will be on the spot to check the quality of the products of this seemingly simple check there is a lot of knowledge, determine the life of the product.Mechanical seals products inspection need more cautious, if check method can also lead to improper product appear all sorts of flaws.The following for the general consumers to accept the stand or fall of how to check the seals.

1. Mechanical seal without any impurities, thoroughly cleaning before assembling mechanical seal ring and static ring, shaft sleeve, etc.

2. Check whether there is a dynamic and static ring surface defects such as scratch, crack, these flaws will cause serious leakage of mechanical seal.Conditional can use a special tool to check the sealing face whether level off, sealing surface uneven, pressure water will enter the assembly of mechanical seal ring sealing surface activity, separate of dynamic and static ring, mechanical seal failure.When necessary, can make tooling hydrostatic test before assembly.

3. Check the action whether defects affect the seal ring.Such as dynamic and static ring seat with dynamic and static ring sealing ring surface is flawed.

4. Check whether compensation spring mechanical seal damage and deformation, if stubborn coefficient change.

5. Check the sealing sleeve defects such as the existence of burr, the trench.

6. Cleaning check all gasket exists defects such as cracks, porosity, measurement of synthetic diameter is within tolerance.

7. Has also check screw pump mechanical seal of pump body of helix whether there is a crack, break the blemish such as.

8. Check of dynamic and static ring and the clearance between the shaft or the shaft sleeve, the inner diameter of the static ring is generally larger than the diameter of axle 1 ~ 2 mm, the ring, in order to ensure floating, 0.5 ~ 1 mm, inner diameter larger than the diameter of axle used to compensate for shaft vibration and deflection, but the gap not too big, otherwise it will make the ring seal card into and cause the destruction of the mechanical seal function.

About the collar to check ,under the collar of overhauling inspection, corrosion and wear after if corrosion or wear more mild, usable fine sand paper polishing reoccupy, if serious corrosion or wear can adopt the method of processing after plating or change new bushings.

About sealing ring,after sealing ring over a period of time, loss of elasticity in most cases, or aging, usually need to change the new circle.
About ring

1) If you don't serious spring rusting, can keep the original elasticity, and is not replaced.If corrosion is more serious or elasticity decreased a lot, you need to change the new spring.
2) Mechanical seals, after repair, to assembly, the assembly after the same pressure experiment was carried out, and then put into normal operation.
3) For mechanical seal with assembled box, box to be removed, and check whether groove wear or deformation, for correction, repair back slot or replacement.When buying a mechanical seal Check the product of several big method

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