Mechanical Seals vs. Gland Packing: A Complete Comparison

Mechanical seals and gland packing both prevent leakage in rotating equipment, but their performance differs significantly. Gland packing uses braided material compressed around the shaft, which is inexpensive but requires frequent adjustments and leads to higher friction and energy loss. Mechanical seals, on the other hand, provide a precise sealing interface with minimal friction, reducing wear and extending equipment life. While initial costs for mechanical seals are higher, they significantly lower total ownership costs through reduced downtime, energy savings, and longer maintenance intervals—making them the preferred choice for modern industrial operations.