What is the Gland Packing?

A gland is a type of stuffing box that is used to seal a reciprocating or rotating shaft against a fluid. The most common is the head of a tap called the faucet where the glad is usually packed with string which has been soaked in similar grease or tallow. The gland nut allows the packing material to be compressed to form a watertight seal and prevent the water from leaking up the shaft when the tap is turned on.

Mechanical seals and gland packing are very important components of pumps and shafts. There are countless of engineering applications rely on these devices to function properly. Although packaging and pumps have similar functions by using either depending on the budget or personal preferences and most importantly they must meet the application requirements. An example, rotary pumps work best with seals because they are capable of treating, filtering and collecting fluid leakage. There are also applications where a packing is more appropriate choice such as settings with corrosive surrounding which happen to cause seals to deteriorate faster and if this is the case the packing will last longer.

Gland packing is also known as conventional shaft seal. There are many engineers that do not recommend packing for a lot of applications due to the requirements and costs of maintenance. The sealing off gases and liquid are not that effective either as a packing is prone to occasional leakage therefore there is a need to regularly adjust so that the seal is well-lubricated.

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