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GYLON® Style 3504 | Compressible Sealing Materials for PEM Electrolyzers

Garlock GmbH
GYLON® Style 3504 | Compressible Sealing Materials for PEM Electrolyzers
Summary

  • High‑performance PTFE sealing material ideal for electrolyzer systems.
  • Delivers reliable sealing in green and grey hydrogen production environments.
  • BAM‑tested and approved for hydrogen exposure, ensuring material stability in electrolyzer components.
  • Provides excellent tightness for high‑purity hydrogen, validated with EN 13555 (helium‑based) test standards.
  • Complies with TA‑Luft and supports EN 1591‑1 flange calculations for secure, low‑leak sealing.
  • Suitable for both gaseous and cryogenic hydrogen conditions found in modern electrolyzer processes.
  • Offers controlled compressibility, recovery, and chemical resistance required for demanding cell stacks and balance‑of‑plant systems.

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Description Vendor

GYLON® Style 3504

High‑Performance PTFE Sealing for Hydrogen Electrolyzers

GYLON® Style 3504 is a high‑performance PTFE-based gasketing material designed to meet the demanding sealing requirements of the hydrogen electrolyzer industry. With the rapid global expansion of green hydrogen, electrolyzer systems must operate with extremely low leakage rates, chemical resistance, and long-term stability—especially under fluctuating pressures and temperatures. GYLON® Style 3504 provides a proven sealing solution that meets these expectations.

Engineered for both PEM and alkaline electrolyzer environments, GYLON® Style 3504 ensures durable, compliant, and reliable sealing performance across the entire hydrogen production process. Its excellent tightness behavior, regulatory compliance, and certified hydrogen compatibility make it a trusted material for OEMs and system integrators in the energy transition sector.

Key Features & Benefits

  • Optimized for Hydrogen Electrolyzers
    Designed to perform reliably in high‑purity hydrogen environments, supporting the demanding conditions of modern electrolyzer stacks and balance‑of‑plant systems.

  • BAM-Tested for Hydrogen Compatibility
    Certified by the German Federal Institute for Materials Research and Testing (BAM), confirming excellent material stability after hydrogen exposure.

  • High Technical Tightness
    Validated with EN 13555 sealing parameters using helium—an even smaller molecule than hydrogen—ensuring extremely low leakage rates.

  • TA‑Luft Compliant
    Supports EN 1591‑1 calculations for technical tightness, fulfilling regulatory requirements for hydrogen handling systems.

  • Suitable for Gaseous & Cryogenic Hydrogen
    Performs under a wide range of operating conditions, including cold electrolyzer environments and high-pressure hydrogen streams.

  • Chemical Resistance for Harsh Media
    Withstands aggressive electrolytes, oxygen-rich environments, and process chemicals used in PEM and alkaline systems.

  • Stable Compressibility & Recovery
    Engineered PTFE structure ensures long-term sealing performance even under thermal cycling and continuous load.

Applications in the Hydrogen Industry

  • Electrolyzer cell stacks (PEM & alkaline)
  • Hydrogen supply and distribution modules
  • Balance-of-plant flanges and sealing points
  • Gas purification and drying units
  • High‑pressure hydrogen manifolds
  • Cryogenic hydrogen systems
  • TA‑Luft–relevant hydrogen process equipment

Contact us

  • Interested? Please contact Garlock by filling in the contact supplier form for free.
Garlock GmbH

Garlock is a global manufacturer of high-performance sealing solutions with an emphasis on safety, longevity, and productivity. We work closely with our end-user customers, distribution partners, OEMs (original equipment manufacturers), industry associations, and government entities to understand their unique sealing challenges and respond with innovative solutions that keep people safe and the environment protected.

With a history dating back over 135 years, Garlock today maintains a global presence of manufacturing and distribution facilities that allow us to meet our customers’ needs with unprecedented responsiveness and ingenuity.

By combining the most innovative products with unparalleled service and a strong commitment to the environment, we deliver solutions that improve plant productivity, reduce costs, and comply with increasingly stringent environmental regulations.

Garlock, also known as Garlock Sealing Technologies, is an Enpro company.

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