The "Dual Mission" of Drain Plugs – Sealing + Protection, Neither Can Be Missing

Though small in size, engine drain plugs are core protective components with two critical functions. First, they seal the engine oil pan or cooling system to prevent leakage of engine oil and coolant, ensuring no loss of internal fluids. Second, they provide low-temperature protection: when coolant accidentally freezes and expands, some drain plugs will pop out to relieve pressure, avoiding cracks in the engine block or cylinder head. Typically installed at the lowest point of the engine’s bottom, they are mostly made of steel, aluminum, or brass, achieving a tight fit through threads and sealing washers. In daily driving, this "little plug" silently safeguards the foundation of engine operation – never underestimate its importance due to its small size.

The rocker arm assembly is a core component in many mechanical equipment, especially in automobiles, construction machinery, and some heavy equipment, playing a crucial role. Below, we will provide a detailed introduction to the relevant knowledge of the rocker arm assembly.

2022-07-28

What is a tensioning wheel

Tensioning wheel is an important mechanical device mainly used to adjust and maintain the tension of the transmission belt

2022-01-10

The purpose of the idler gear shaft

The idler gear shaft is an important mechanical component used to transmit rotational force.

2021-11-12

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