Enhancing Automotive Sealing Systems with TPS-EPDM Bonding Technology

In industries where durability, performance, and process efficiency are paramount, especially automotive, thermoplastic elastomers (TPEs) have become a go-to material for innovative sealing systems. Among the most advanced solutions is TPE bonding to EPDM, enabled by KRAIBURG TPE’s patented technology. 

Proven Grades for EPDM Adhesion 

When it comes to reliable and long-lasting bonding with EPDM (ethylene-propylene-diene monomer), TPE with EPDM Adhesion grades TC7RQP-BLCK, TC8RQP-BLCK, STC9341/288 (80 Shore A) and STC9341/289 (90 Shore A) are among the most trusted. These TPEs are engineered to deliver:

• Consistent adhesion to EPDM, after long-term thermal stability studies
• Optimized flow properties, supporting broader processing windows and freedom in part/tool design 
• Low internal tool pressure, which facilitates smooth processing and demolding 
• Low coefficient of friction, weathering resistance, and color stability 
• Homogeneous surface quality and wear resistance 
• Lightweight material benefits through lower density 
• Coloring in OEM exterior colors, supporting brand-specific aesthetics 

In addition, KRAIBURG TPE provides detailed processing guidelines tailored to EPDM adhesion, ensuring customers can integrate these materials efficiently into existing workflows.

What’s Driving Innovation in TPE-EPDM Bonding? 

Current market trends and customer demands are significantly influencing material innovation in this space. Three key forces are shaping the development of new solutions: 

• Process Efficiency  
  TPE systems enable enhanced processing and more flexible manufacturing compared to TPE-EPDM hybrids for sealing applications. Thanks to easier processing and shorter cycle times, manufacturers can achieve higher productivity while reducing operational costs.   
• Sustainability 
  Today’s automotive OEMs and suppliers are under pressure to reduce the carbon footprint of their vehicles. Switching to low-density TPE materials contributes to weight reduction and energy efficiency. Hybrid sealing solutions also support recyclability and reduce material waste during production. 
• Design Flexibility and Aesthetic Requirements 
  The ability to color TPE compounds in OEM-specified shades, combined with superior surface quality, enables sleek, high-end finishes on visible automotive parts. This ensures both functional performance and design alignment with modern vehicle aesthetics.

Ready to Enhance Your Sealing Systems? 

Whether you're developing advanced automotive sealing profiles or seeking a reliable TPE solution for EPDM bonding, KRAIBURG TPE’s THERMOLAST® K series delivers the performance, efficiency, and sustainability your application demands.

Want to learn more or request a sample? Contact our team of material experts to discover how our TPE-EPDM solutions can elevate your product design.