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Rilsan® HT flexible polyphthalamide (PPA)

Product overview
Rilsan® HT is the first flexible polyphthalamide (PPA) material range combining high‑temperature resistance, chemical durability and lightweight performance. Designed to replace metal in demanding fluid management systems, Rilsan® HT offers unprecedented flexibility for a PPA while maintaining excellent resistance to heat, thermo‑oxidative aging, chemicals and moisture. Its unique long‑chain polymer chemistry enables durable, lightweight solutions for severe automotive and industrial environments.
Geographic availability
  • Latin America and the Caribbean
  • Middle East
  • North America
  • Oceania
  • Asia Pacific
  • Europe
  • Africa

The first flexible polyphthalamide for demanding automotive and industrial applications

Rilsan® HT grades represent a new generation of flexible polyphthalamides (PPA) designed to combine high-temperature resistance, chemical durability and lightweight performance.
Developed for demanding automotive and industrial applications, Rilsan® HT grades deliver an exceptional balance of flexibility and mechanical reliability while maintaining outstanding resistance to heat, chemicals and moisture. Their unique long-chain polymer architecture supports the development of lightweight and durable solutions for challenging operating environments.

Flexibility that expands design possibilities

Rilsan® HT grades bring a new level of flexibility to the polyphthalamide family, helping engineers overcome design limitations traditionally associated with rigid high-temperature materials.
By combining flexibility with thermal and chemical resistance, these materials support the development of innovative components and lightweight systems for demanding automotive and industrial applications.    

Learn more about Rilsan® HT grades 

Engineered for durability in demanding environments

Rilsan® HT grades are designed to maintain consistent performance under prolonged exposure to heat, chemicals and mechanical stress. Their low moisture absorption contributes to dimensional stability and long-term reliability across a wide range of operating conditions.
This unique combination of properties makes Rilsan® HT grades suitable for applications requiring dependable performance in severe environments.

Explore Rilsan® HT grades in the Material Database

Applications across automotive and industrial markets

Rilsan® HT grades are used in a variety of demanding automotive and industrial applications requiring flexibility, durability and high-temperature performance.
Typical applications include:

  • Air management systems
  • Brake booster lines
  • Oil and cooling lines
  • SCR systems
  • Aggressive fluid management
  • Pneumatic and hydraulic systems

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