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EKATO

EKATO

Single-Acting Mechanical Seals

Dry-Running and Lubricated – For Low Pressure Applications

Single-acting mechanical seals are designed with two seal rings with one interface and without any seal liquid chamber. This type of mechanical seal therefore has to be operated either under dry conditions or must be lubricated and cooled by the liquid product.

Product Details

The key design feature of single-acting mechanical seals is that they have only two seal rings. This means they have only one interface and no seal liquid chamber. Therefore this type of mechanical seal has to be operated either under dry conditions or it must be lubricated and cooled by the liquid product.

A key characteristic of single-acting mechanical seals is that they can leak into the surroundings of the vessel. This means the vessel is not technically tight, in contrast to double and triple-acting mechanical seals. Therefore, this seal design is suitable for sealing non critical substances and for low pressure applications.

Dry-Running Mechanical Seal ESD32T

Function and application

  • Single acting, dry-running mechanical seal for low pressure applications
  • Ready-to-install cartridge unit
  • Deliverable with short heat trap at extremely high temperatures
  • Deliverable with Collector tray prevents abrasion material from contaminating the vessel space

Advantages

  • Leak tightness: minimal leakage from the vessel side
  • Suitable for sealing non-critical substances
  • Plug + seal: no adjustment of the spring pre-tension after installation
  • Easy to monitor and install
  • Dry operation eliminates the need for additional installation or supply of seal liquid
  • Visual wear indicator

Working limits

  • Operating pressure: vacuum…4 bar (abs.)
  • Vessel temperature: -10…+230°C
  • Shaft size: 40…220 mm

The EKATO ESD32T is most suitable for

  • Speciality chemicals
  • Formulated consumer products
  • Biofuels and bio refineries
  • Storage tanks
Metallflansch mechanisches Teil Industriekomponente

Product Lubricated Mechanical Seal ESD142

Function and application

  • Single-acting product lubricated mechanical seal for sealing abrasive suspensions
  • Mechanical seal ESD142 is used as a flooded seal – horizontal or vertical installation

Advantages

  • No addition seal liquid supply systems required
  • Extended lifetime, with abrasive products

Advantages

  • No addition seal liquid supply systems required
  • Extended lifetime, with abrasive products

Working limits

  • Operating pressure: vacuum…3 bar (abs.)
  • Vessel temperature: -20…+100°C
  • Shaft size: 20…80 mm
  • Sliding speed: 0…5 m/s

The EKATO ESD 142 is most suitable for

  • Biofuels und bio refineries
  • Storage tanks
Mechanische Dichtung aus Edelstahl für Industrieanwendungen.

Product Lubricated Mechanical Seal ESD42

  • Function and application
  • Single-acting product lubricated mechanical seal
  • Sealing of abrasive suspensions
  • Used in flooded side entry installations
  • Mechanical seal most commonly used in FGD agitators worldwide

Advantages

  • Lubricated and cooled by the product – no additional hydraulic installations required
  • Special plastics provide greater protection against caking and corrosion
  • Shut off device for replacement of mechanical seals even during operation without emptying the vessel

Working limits

  • Operating pressure: vacuum…7 bar (abs.)
  • Vessel temperature: -20…+80°C
  • Shaft size: 40…120 mm
  • Sliding speed: 0…5 m/s

The EKATO ESD 42 is most suitable for

  • Flue gas desulfurization
Metallflansch-Kupplung für Maschinenanwendungen

EKATO Rühr- und Mischtechnik GmbH (EKATO RMT)

Focus: High-performance agitators, reactor agitators, process plants, mechanical seals
Typical Applications:

  • Chemical industry (specialty, polymer, bulk chemicals)
  • Pharmaceutical industry
  • Hydrometallurgy
  • Flue gas desulfurization
  • Biotechnology
  • Paints and coatings

Products & Services:

  • Customized agitators and impellers
  • Reactor agitators (e.g., coaxial, magnetic agitators)
  • Mechanical seals and seal supply systems
  • Process and pilot plants
  • CFD/FEA simulations, scale-up, engineering support
  • Global service network including maintenance, training, spare parts management

EKATO Systems GmbH

Focus: Vacuum processing units for liquids and solids (UNIMIX & SOLIDMIX)
Typical Applications:

  • Cosmetics industry
  • Pharmaceutical industry
  • Food industry
  • Chemical industry

Products & Services:

  • UNIMIX: Vacuum processing mixers for liquid to highly viscous products
  • SOLIDMIX: Solid mixers and dryers for powders and granules
  • Laboratory and pilot-scale systems (3–1000 liters)
  • GMP-compliant turnkey solutions including automation
  • Process consulting, development, scale-up, commissioning, maintenance

EKATO Fluid GmbH

Focus: Standardized, cost-effective industrial agitators
Typical Applications:

  • Chemical industry
  • Paints and coatings
  • Biotechnology
  • Biofuels
  • Pharmaceuticals
  • Cosmetics
  • Water and wastewater
  • Food industry
  • Pulp and paper
  • Fertilizers

Products & Services:

  • Top-entry and side-entry agitators (e.g., EM 2000, ES 2000, MD/SD)
  • Solutions for storage tanks, open and closed vessels
  • Simple mechanical seals
  • Short delivery times, high cost-efficiency
  • On-site commissioning and service

What does “Number of sealing faces” mean?

Single-acting mechanical seals
These seals have one sealing surface and only seal in one direction. They are generally simpler in design and are commonly used in applications where pressure is applied from only one side.

Double-acting mechanical seals
These seals have two sealing surfaces and can seal in both directions. They are ideal for applications where pressure may come from both sides or where a higher sealing performance is required.

Triple-acting mechanical seals
These are less common and used in specialized applications that require a more complex sealing setup. They offer additional sealing surfaces or mechanisms to ensure reliable sealing even in highly demanding environments.