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ORIGRAF® Expanded Graphite Seals:
Engineered for Reliability and Efficiency

ORIGRAF® Graphite Seals
ORIGRAF® Graphite Seals
ORIGRAF® Graphite Seals
ORIGRAF® Seals with double piste
ORIGRAF® Seals with double piste
ORIGRAF® Seals avec double limiteurs
ORIGRAF® Seals avec double limiteurs
ORIGRAF® Seals
ORIGRAF® Seals
ORIGRAF® Seals with cups
ORIGRAF® Seals with cups
ORIGRAF® Seals avec coupelles
ORIGRAF® Seals avec coupelles

Maximize safety, performance, and long-term value with ORIGRAF® die-formed expanded graphite seals from Technetics. Designed to outperform in extreme thermal and pressure cycling environments, ORIGRAF® seals deliver: 

  • Superior sealing integrity under fluctuating conditions 
  • Enhanced operational safety 
  • Reduced maintenance and downtime 
  • Optimized total cost of ownership 

Whether you’re operating in high-temperature, high-pressure, or chemically aggressive environments, ORIGRAF® seals provide the durability and consistency for your critical systems demand. 

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Why Choose ORIGRAF® Expanded Graphite Seals from Technetics Group? 

ORIGRAF® die-formed expanded graphite seals are engineered to deliver exceptional sealing performance in the most demanding environments—where conventional solutions often fall short. 

Unlike standard graphite gaskets or competitor expanded graphite seals, ORIGRAF® seals offer superior adaptability and resilience. Thanks to our proprietary manufacturing process, the graphite structure maintains flexibility, allowing the seal to conform to surface irregularities—even under offloading or transient conditions. This ensures consistent, leak-tight performance where others may fail. 

What Makes ORIGRAF® Stand Out? 

  • Controlled Compression
    Unlike flexible graphite cut gaskets or spiral-wound gaskets, ORIGRAF® seals are designed with mechanical stops—such as precision-engineered grooves or inner/outer rings—that limit compression. This prevents overloading and protects the seal during thermal and pressure fluctuations. 
  • Superior Stress Management – Built for Critical Applications
    The design minimizes excessive seating stress, preserving seal integrity and extending service life in during transient when assemblies are subject to high-pressure, high-temperature environments. ORIGRAF® seals are trusted in industries where safety, reliability, and performance are non-negotiable—from energy and chemical processing to aerospace and defense. 

Choose ORIGRAF® for a smarter, safer, and more cost-effective sealing solution—engineered to reduce maintenance, improve operational safety, and lower your total cost of ownership.
Outperforming other manufacturers in real-world conditions. 

Key Features of ORIGRAF® Expanded Graphite Seals 

Engineered for performance in the most demanding environments, ORIGRAF® expanded graphite seals offer a unique combination of resilience, adaptability, and ease of use: 

  • Exceptional Elastic Recovery
    Achieves up to 40% compression recovery, delivering a reliable spring-back effect for long-term sealing performance (Characterized in our MAESTRAL Laboratory). 
  • Low Creep and Relaxation
    Maintains dimensional stability under critical pressures and temperatures, reducing the need for retightening. 
  • Radiation and Chemical Resistance
    Ideal for nuclear and chemical processing applications, with excellent resistance to harsh media and radiation exposure (Specific nuclear graphite grades on request – for instance PMUC). 
  • Thermal and Pressure Adaptability
    Performs reliably under extreme temperature and pressure fluctuations, ensuring consistent sealing in transient conditions. 
  • Metal-to-Metal Contact Design
    Enhances structural strength and ensures consistent seating load control. 
  • Insensitive to Asymmetric Bolt Tightening
    Maintains sealing performance even when assembly torque is uneven—reducing installation errors and improving reliability. 
  • Non-Adhesive to the Flanges Contact Surfaces
    Usually does not bond to flanges, making removal and replacement quick and damage-free during maintenance. 

Product Applications

ORIGRAF® expanded graphite seals are trusted across a wide range of high-demand industries where safety, reliability, and performance are critical: 

Industries Served: 

  • Nuclear Power & Research 
  • Chemical Processing 
  • Petrochemical & Refining 
  • Oil & Gas Exploration & Production 

Common Applications: 

  • Steam Generators & Pressurizers 
  • Manholes & Other critical maintenance related openings 
  • Heat Exchangers 
  • Piping Flange Connections 
  • Valves and Pumps 
  • Critical Flange Assemblies 

Looking for a sealing solution that meets nuclear-grade standards and performs under extreme conditions? 

ORIGRAF® seals are engineered to deliver maximum safety, minimal maintenance, and long-term reliability—making them the preferred choice for engineers in the world’s most demanding industries. 

Specifications

Feature Specifications
Pressure Resistance Up to 400 bar (5,802 PSI)
Temperature Range From -321°F to 4532°F (-196°C to 2500°C)
Standard Sizes DN: 15 to 600 mm (NPS: 1/2” to 24”)
Up to 1.500 mm (59”) on special request
Pressure Classes CLASS 150 to 2500 / PN 20 to 420
Certifications PMUC Certified by EDF (No. PMUC 17-0174)
BAM Certified for use in oxygen-rich and high-risk environments

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Have questions? A Technetics Group product specialist will get back to you to shortly.

Graphite Seals

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