Single Cartridge Seals

Material Selection for Single Cartridge Mechanical Seal

As one of professional China mechanical seal manufacturers, we place great emphasis on material precision and performance stability. Each Single Cartridge Mechanical Seal is carefully designed and produced according to the working environment and medium characteristics to ensure long-lasting reliability.

For oil-filled motors, sealing performance requirements are higher — the seal must prevent external impurities, sand, and water from entering while also avoiding internal oil leakage. Therefore, we use premium Tungsten Carbide or Silicon Carbide for the sealing faces, ensuring superior hardness, wear resistance, and sealing integrity.

For water-filled motor applications, where the main goal is sand control, we select Alumina Ceramic, Silicon Nitride, or other high-hardness materials to provide effective protection at a more cost-efficient level.

Every material is strictly inspected and matched to the operating conditions, reflecting our commitment to precision engineering and reliable sealing solutions for global industrial clients.

Recommended Applications of Single Cartridge Mechanical Seal

General industrial applications including chemical processing, food and beverage, petrochemical processing, pharmaceutical, wastewater and power generation.
Centrifugal pump, Chemical pump, Slurry pump, Mixer, Agitator, Circulation pump, Submersible electric pump, Reactor, Oil pump etc.

Difference between Cartridge Mechanical Seal and Non-Cartridge Mechanical Seal

• Cartridge mechanical seal has a sleeve and gland; non-cartridge seals only have the rotary and stationary ring.

• The installation error rate of the Common non-cartridge mechanical sea is higher than the cartridge mechanical seal. Therefore, use cartridge shaft seal can greatly reduce the occurrence of mechanical seal failure.

• Since the cartridge mechanical seal does not require any adjustment of the mechanical seal by the installer (such as spring, sealing surface, etc.), only the bolts need to be tightened, which greatly improves the reliability of the mechanical seal installation.