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Stationary Seat

Stationary seats, or stators, are critical components in mechanical seal assemblies, providing the stationary sealing surface against which the rotary face operates. Their design, dimensions, and material selection are paramount for optimal seal performance, reliability, and longevity across diverse applications, from chemical processing to water treatment.

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Standard Dimensions and Compliance

Global standardization ensures component interoperability and reliability. Key standards include:

● DIN 24960 / EN 12756: These define precise dimensions, tolerances, and identification codes, including options for short axial dimensions, anti-rotation pin, and seat blocked ring

● European/American Standard Housing Dimensions: Designs often align with common EU/U.S. industry housing specifications, including anti-rotation slot ensuring broad compatibility with pumps and rotary equipment.

Material Selection and Performance Characteristics

For detailed material parameters please refer to Materials and Features .

Material choice must account for chemical compatibility, thermal stability, abrasion resistance, and mechanical strength. Common materials include:

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Q1 -- Non-Pressure Sintered Silicon Carbide (SSiC):

A high-density ceramic material, which offers exceptional hardness, retains high strength under extreme temperatures, and exhibits outstanding resistance to chemicals and wear.
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Q2 -- Silicon Carbide (SiC):

Delivers exceptional hardness, superior abrasion resistance, and broad chemical compatibility. Ideal for abrasive slurries and aggressive chemicals.
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U2 -- Tungsten Carbide (TC):

Valued for excellent mechanical strength and wear resistance, commonly applied in high-pressure and abrasive services.
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A -- Carbon Graphite M106K:

Please refer to Materials and Features
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B -- Carbon Graphite M106D:

Please refer to Materials and Features
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V1 -- Alumina Ceramic (e.g., 99% Al₂O₃):

An economical solution offering good wear performance in many non-abrasive services.
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Secondary Sealing Options

An effective seal between the stationary seat and gland is critical. Beyond standard elastomer O-rings (e.g., NBR, EPDM, FKM/Viton), we have option of L-Shape Seals, PTFE Gaskets

Why Choose Our Stationary Seats

Download Our Technical Catalog

Get complete specifications, dimension tables, and application guidelines for our full range of stationary seats.
Download Our Technical Catalog
    Our catalog includes:
  • Detailed material properties and performance data
  • Standard and custom dimension specifications
  • Cross-reference guides for major OEM parts
  • Application recommendations and selection guidelines
  • Technical drawings and installation instructions
  • Download Now to access comprehensive engineering data for your sealing solutions.

Need Immediate Support or Customized Solutions?

Our engineering team is ready to assist with application-specific challenges, material recommendations, and custom-designed stationary components. Contact our technical experts for personalized support and quotation requests.

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