Which material is recommended for manufacturing the stationary portion of a mechanical seal?

The recommended material for manufacturing the stationary portion of a mechanical seal is ceramic. Ceramics are preferred due to their excellent hardness and wear resistance, which are crucial for enduring the stresses and conditions found in sewage treatment processes. They can withstand high temperatures and corrosive environments, ensuring longevity and reliability in sealing applications where liquids may contain various contaminants and chemicals.

Ceramic materials provide a very smooth surface which helps create a better sealing interface, minimizing leakage. Their innate resistance to abrasion also makes them a suitable choice for mechanical seals that experience constant movement and friction.

Other materials such as plastic or rubber may not possess the same level of durability or resistance to temperature and corrosion that ceramics offer, while stainless steel, although strong, can suffer from wear over time in the demanding settings of sewage treatment. Thus, ceramics stand out as the ideal choice for optimal performance and durability in the stationary component of mechanical seals.