Most of the leakages of newly installed mechanical seals comes from the improper installation.
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The designed face pressure rate is not accurate to meet the requirements.
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The inaccuracy of the amount of spring compression
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The seal surface roughness does not meet the standard
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The seal face flatness does not meet the standard.
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The seal rings distort due to the pressure and temperature. It damages the flatness of the mechanical seal faces
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The Seizure of rotary and rotary holder.
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Rotary and seat is not concentric.
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The Load factor of balanced mechanical seals is not accurate (always too small)
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The OD and ID of the metal bellow are inaccurate.
