HE80D Mechanical Seal

The HE80D Mechanical Seal is a high-performance, double-spring, pusher-type seal engineered to deliver exceptional reliability and longevity in demanding industrial applications. Designed for use in centrifugal pumps, mixers, agitators, and rotating equipment, the HE80D is particularly suited for processing operations in industries such as chemical, pharmaceutical, food and beverage, wastewater treatment, and light hydrocarbon handling.

At its core, the HE80D is a single, unbalanced mechanical seal with a compact and robust construction. It features a double conical spring design, which provides even pressure distribution across the seal faces, ensuring a consistent and reliable sealing interface. This arrangement allows for effective sealing even under conditions of moderate shaft misalignment or vibration, making the HE80D a preferred choice in situations where stability and continuous operation are critical.

The sealing faces of the HE80D are typically manufactured from combinations like Carbon vs. Ceramic, Silicon Carbide vs. Carbon, or Tungsten Carbide vs. Carbon, selected according to the application environment and the nature of the media being sealed. These face materials offer a balance of hardness, thermal stability, and chemical resistance, ensuring long service life and low wear. The carbon face, often resin-impregnated, provides excellent self-lubricating properties, while the harder mating face (ceramic or carbide) resists abrasion and chemical attack.

The secondary seals (O-rings or gaskets) are available in Viton®, EPDM, Nitrile (NBR), or PTFE, depending on the chemical compatibility requirements. The choice of elastomer ensures optimal resistance to aggressive fluids, temperature variations, and process contaminants. The metallic components, such as the springs, retainers, and gland plates, are typically made from SS304 or SS316 stainless steel, providing mechanical strength and corrosion resistance, especially in chemically exposed environments.

The HE80D is designed for operating pressures up to 12 bar and shaft speeds up to 3600 RPM, with a typical temperature range from -20°C to +140°C. These specifications make it ideal for handling a wide range of liquids, including water, light chemicals, solvents, and oils. Its versatility allows for integration into both horizontal and vertical equipment, and it is particularly effective in clean media or lightly contaminated fluids.

One of the standout features of the HE80D is its easy installation and maintenance. The seal’s structure allows for quick assembly without the need for complex tools or precision alignment, reducing downtime during replacement or servicing. It is designed to comply with DIN 24960 / ISO 3069 standards, ensuring interchangeability with other mechanical seals and compatibility with standard pump housings.

In summary, the HE80D Mechanical Seal is a versatile and durable solution for fluid sealing in medium-duty industrial applications. Its advanced design, material flexibility, and performance range make it a cost-effective choice for operators seeking reliability and low maintenance costs. Whether in continuous or intermittent service, the HE80D ensures excellent sealing integrity, operational efficiency, and reduced equipment wear.