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What could cause a leak at the gland of a pump with a mechanical seal?

Excessive pressure in the pump

The pump ran dry ruining the seal faces

A leak at the gland of a pump with a mechanical seal can indeed be caused by the pump running dry, which can damage the seal faces. When a pump operates without the necessary fluid, the mechanical seal that is designed to keep the fluid contained can experience excessive heat due to friction. This can lead to a breakdown of the materials, causing wear on the seal faces and ultimately resulting in leaks. Mechanical seals rely on a film of fluid to lubricate and cool the seal surfaces, and when that fluid is absent, it can lead to a situation where the seal fails prematurely.

It's essential to operate pumps under conditions that ensure adequate lubrication and cooling to maintain the integrity of the mechanical seals. Understanding this can help in implementing preventive measures to avoid running a pump dry, thus preserving its functionality and preventing leaks.

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Improper installation of the seal

Insufficient lubrication

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