Hytrel® TPC-ET HTR8223 BK320

Hytrel TPC-ET HTR8223 BK320 is a medium-modulus thermoplastic polyester elastomer (TPC-ET) with a nominal hardness of 42D (36D at 15s). This black, heat- and light-stabilized grade is engineered for blow molding and other processing techniques requiring high melt viscosity. It offers excellent toughness, resilience and flexibility at low temperatures, while maintaining strong mechanical performance at elevated temperatures. Hytrel TPC-ET HTR8223 BK320 provides outstanding resistance to creep, impact and flex fatigue and demonstrates very high tear strength and abrasion resistance. It also offers good resistance to oils, fuels, solvents and many industrial chemicals.

Key Features:

• Medium-modulus elastomer (42D)
• Black, heat- and light-stabilized grade
• Designed for blow molding and high-viscosity processing
• Outstanding toughness and impact resistance
• Excellent creep and flex fatigue resistance
• High tear strength and abrasion resistance
• Good resistance to oils, fuels, solvents and industrial chemicals
• Plasticizer-free with long-term property retention

Processing Form:

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

Processing Notes:
Drying is recommended at 110°C for 3–4 hours to reach a processing moisture content ≤0.08%. Hytrel TPC-ET HTR8223 BK320 has an optimal melt temperature of 230°C (min. 220°C, max. 250°C) and an optimal mold temperature of 45°C (35–46°C range). For extrusion, dry at 100°C for 2–3 hours to reach ≤0.06% moisture and process at a melt temperature of ~230°C. For blow molding, dry ≤100°C with a moisture target ≤0.02% and process at an optimal melt temperature of 235°C. Hytrel is incompatible with acetal and PVC. Please refer to molding and extrusion guidelines for detailed recommendations.