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PA6 (Polyamide 6) Material

February 13, 2026

Written By:
James Leanch

EPM INC. | ENGINEERING MATERIALS

PA6 (Polyamide 6) Material

A high-performance thermoplastic designed for demanding mechanical environments and industrial sealing applications.

What Is PA6?

PA6, also known as Polyamide 6 or Nylon 6, is a high-performance cast thermoplastic engineered for demanding mechanical environments. It offers a distinctive balance of hardness and elasticity, making it a valuable material in precision engineering.

At EPM Inc., material selection is an important part of finding the right sealing solution. Understanding the properties and limitations of PA6 can help engineers and equipment professionals determine whether it is suitable for their specific application.

Common PA6 Applications in the Sealing Industry

PA6 is frequently used for guide, back-up, and support elements in sealing systems. Its mechanical properties and natural lubricity make it useful in dynamic applications where sliding friction and wear are ongoing considerations.

Guide Elements

Used to help guide and support moving components within mechanical systems.

Back-Up Elements

Provides support in sealing arrangements where additional resistance to mechanical loads is needed.

Support Elements

Helps support components in demanding mechanical and dynamic applications.

Key Properties and Benefits of PA6

PA6 offers several characteristics that make it a useful alternative to traditional metal components in certain applications. EPM can help customers understand these properties when evaluating materials for their equipment.

High Load-Bearing Capacity

Provides mechanical strength for demanding support and guide applications.

Natural Lubricity

Supports sliding performance in applications where friction is a consideration.

Vibration Absorption

Can help reduce machine noise and vibration compared with traditional metal components.

Wear Resistance

Resists galling and can help extend maintenance intervals in suitable applications.

Important PA6 Material Consideration: Moisture Absorption

While PA6 offers valuable mechanical properties, its hygroscopic nature means it naturally absorbs moisture from its surroundings.

In aqueous or high-humidity environments, moisture absorption can cause dimensional swelling and a reduction in mechanical strength. These changes may affect the material's performance and suitability for certain applications.

**EPM Material Guidance:** Based on these considerations, EPM recommends PA6 primarily for dry-running applications or applications where the material is protected from fluid saturation. Evaluating the operating environment is an important step in selecting the appropriate material.

Need Help Selecting the Right Material?

Choosing the right material for a sealing application involves more than simply comparing physical properties. Operating conditions, moisture exposure, mechanical loads, and application requirements all play an important role.

EPM Inc. is here to help. Our team can assist with PA6 material questions and help you evaluate material options for your specific sealing requirements. If you're unsure whether PA6 is the right choice, contact EPM for assistance.

PA6 Material Data Sheet

Review the PA6 physical properties and material specifications below.

EPM PA6 Polyamide 6 material data sheet showing physical properties including hardness, density, tensile strength, and temperature limits.

Contact EPM for PA6 Material Assistance

Have questions about PA6 Polyamide 6, its properties, or whether it is suitable for your application? EPM is ready to help you find the information and sealing support you need.

Contact EPM 1-800-659-5050