Hytrel® TPC-ET HTR6108

Hytrel TPC-ET HTR6108 is a high-performance thermoplastic polyester elastomer (TPC-ET) with a nominal hardness of 55D (max. 61D). This grade is designed for applications requiring low permeability to fuels and oils, while offering excellent toughness, resilience and flexibility at low temperatures. Hytrel TPC-ET HTR6108 provides strong mechanical performance at elevated temperatures and demonstrates outstanding resistance to creep, impact and flex fatigue. It also offers good chemical resistance across acids, bases, alcohols, hydrocarbons, oils and standard fuels. The material can be processed using conventional thermoplastic equipment for injection molding and extrusion.

Key Features:

• High-performance TPC-ET with low fuel and oil permeability
• Medium-high modulus with excellent toughness
• Outstanding resistance to creep, impact and flex fatigue
• Very good low-temperature flexibility (brittleness at –65°C)
• Good resistance to oils, fuels, solvents and industrial chemicals
• Reliable melt stability for molding and extrusion
• Plasticizer-free with long-term property retention

Processing Form:

• Injection Molding
• Film Extrusion
• Extrusion
• Sheet Extrusion
• Other Extrusion
• Coating
• Thermoforming

Processing Notes:
For injection molding, drying is recommended at 90°C for 2–3 hours to achieve a processing moisture content ≤0.08%. Hytrel TPC-ET HTR6108 has an optimal melt temperature of 200°C (range 185–215°C) and an optimal mold temperature of 45°C (40–55°C range). For extrusion, dry at 100°C for 2–3 hours to reach ≤0.06% moisture, and process at a melt temperature of approx. 230°C. Hytrel is incompatible with acetal and PVC. Please refer to the molding and extrusion guides for detailed recommendations.