6th Sealing Workshop – Extremes
“Pushing the limits of sealing technologies”
Palais des Papes, Avignon, France
June 9–10, 2026
Event Overview
The Sealing Workshop is a high‑level technical event bringing together equipment end‑users, research institutes, universities, and sealing experts from across the international sealing community.
Co‑organized by 기술, CEA및 MAESTRAL (their joint sealing lab), the workshop offers a unique environment to exchange knowledge, share feedback from real industrial applications, and explore emerging technical challenges shaping the future of sealing technologies.
CEA‑ISEC is the Institute for a Circular Economy of Low‑Carbon Energies, located at CEA Marcoule and involved in process engineering, materials science, modelling and eco‑design.
It collaborates closely with Technetics through the MAESTRAL joint lab, dedicated to sealing science, product qualification and advanced simulation.
CEA‑ISEC is the Institute for a Circular Economy of Low‑Carbon Energies, located at CEA Marcoule and involved in process engineering, materials science, modelling and eco‑design.
It collaborates closely with Technetics through the MAESTRAL joint lab, dedicated to sealing science, product qualification and advanced simulation.
2026 Theme: ‘Extremes’
Today’s industrial and scientific challenges are pushing sealing solutions far beyond conventional operating limits.
Increasing performance requirements, harsher environments, longer service lifetimes, and more demanding safety or reliability expectations are redefining what reliable sealing means.
In this context, ‘Extremes’ refers to any limiting operational, environmental, performance, or lifetime condition that may impact sealing performance-under both normal and accidental conditions.
This edition of the workshop will highlight approaches, developments, and critical applications designed to address these challenges across a wide range of industries.
Programme Highlights
Why Attend
Provisional agenda of the 6th Maestral Workshop
9 June
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Start
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End
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Session training
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Speaker
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9:00
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12:00
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From Requirement to Qualification: Building a Reliable Sealing Solution
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TECHNETICS TLA
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Welcome
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Session H2
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13:30
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14:00
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Experiments on an advanced liquid hydrogen cryostat for truck applications
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KIT
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14:00
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14:30
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Characterize and qualify the performance of sealing systems for hydrogen applications
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CETIM
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14:30
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15:00
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Sealing challennges for H2 industry
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CEA
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15:00
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15:30
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Session Aero – Space
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15:30
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16:00
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Carburant HEFA : effet sur le matériau élastomère FKM
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ELANOVA
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16:00
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16:30
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Material conditions and weld type, and their affect on load required to compress X-750 O-Flex seals
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TECHNETICS
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16:30
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17:00
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Nuclear space : critical sealing between fission and the void – (Nucléaire spatial : étanchéité critique entre fisssion et espace)
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TECHNETICS
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Round table
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17:00
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18:00
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Extremes , risks & opportunities
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19:30
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21:30
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Networking Dinner : cruise on the Rhone river
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10 June
| Start | End | Session training | Speaker |
| Start | End | Session big science | |
| 08:30 | 09:00 | Helicoflex Radial Seals with Mating Material Aluminium EN AW6061 T6 inNuclear Applications | TUM |
| 09:00 | 09:30 | Helium sealing performance at high temperatures and pressures | UKAEA |
| 09:30 | 10:00 | Performance assessment of a QDS sealing junction for the ITER Test Blanket Module Helium Cooling System | ITER & CEA |
| 10:00 | 10:30 | Dark Matter experiment | STFC |
| Session materials | |||
| 11:00 | 11:30 | Extension of temperature and pressure operating range of HELICOFLEX by surface texturization. | TECHNETICS |
| 12:00 | 12:30 | High-temperature thermal energy storage using liquid metals – materials and components testing | KIT-ITES |
| 12:30 | 13:00 | Elastomer under extreme radiation : material behaviour and sealing performance | CERN & TECHNETICS |
| 13:00 | 14:30 | Lunch | |
| Session durability | |||
| 14:30 | 15:00 | Evaluation of the Long-term Performance of Metal Seals Used in HLW Transport and Storage Casks | BGZ |
| 15:00 | 15:30 | Advanced Analysis and Performance Characteristics of Materials Exposed to Extreme Environments | TECHNETICS |
| 15:30 | 16:00 | Evolution of the microstructure and mechanical behavior at moderate temperatures of metallic materials used in sealing systems | Ecole des Mines de Paris |
| 16:00 | 16:15 | Closing |
Optional Technical Training Session
This optional half‑day training session introduces the fundamental principles of static sealing and supports reflection on key questions related to functional requirements, design choices, and qualification strategies.
Participants will benefit from open discussions with subject‑matter experts covering integration, calculations, qualification, testing, and implementation.
A shared meal is included.
Limited number of seats.
Limited number of seats.
Who Should Attend
Venue
The workshop will take place at the Palais des Papes, a UNESCO World Heritage site located in the heart of Avignon, France.
This exceptional venue provides an inspiring setting for high‑level technical exchange and networking.
Practical Information
Previous Edition
Discover highlights from the previous Sealing Workshop held in Pierrelatte, France, at the maestral® R&D Sealing Laboratory.
(Video and recap to be embedded: Pierrelatte, France – maestral® R&D Sealing Laboratory – Technetics Group.)
