TPE-E Hytrel: Copolyester Elastomer for Flexible Parts
Published: 2026-06-02
Hytrel TPE-E combines rubber flexibility with thermoplastic processability. Hard segments (PBT) provide strength; soft segments provide flexibility. Bonds to PBT/PC/ABS in overmolding. For CVJ boots, airbag covers, flexible connectors.
Hytrel TPE-E combines rubber flexibility with thermoplastic processability. Hard segments (PBT) provide strength; soft segments provide flexibility. Bonds to PBT/PC/ABS in overmolding. For CVJ boots, airbag covers, flexible connectors.
Technical Properties
| Density | 1.20 g/cm³ |
|---|---|
| Tensile Strength | 40 MPa (55D) |
| Melting Point | 200-220 °C |
| Shrinkage Rate | 1.0-1.5% |
| Flexural Modulus | 0.2 GPa (55D) |
| Hdt | 80-115 °C |
Engineering Tool: Shrinkage & Cost Estimator
Calculate part weight, mold cavity dimensions accounting for shrinkage, and material cost — all locally in your browser.
Equivalents & Cross-References
| Equivalent / Alternate | Action |
|---|---|
| Hytrel 5556 | |
| Arnitel EM550 |
Frequently Asked Questions
Overmold onto nylon?
Moderate adhesion. For overmolding onto PA66, use TPE-U (Desmopan/Texin) for superior adhesion via hydrogen bonding.
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References & Industry Standards
- ASTM International. Standard Specifications for Engineering Plastics & Thermoplastics. astm.org
- UL Prospector. Plastics & Elastomers Material Database. ulprospector.com
- MatWeb. Material Property Data for Engineering Thermoplastics. matweb.com
- ISO 1043. Plastics — Symbols and Abbreviated Terms. iso.org