Exaflex TPU 95A thermoplastic polyurethane

Description

Exaflex® TPU 95A is an ester-based thermoplastic polyurethane with a hardness of 95 Shore A. It combines high tensile strength at break (42 MPa) with exceptionally high elongation of 572 % and an elastic modulus of 108 MPa — a combination rare for the 95A class, characterizing the material as stiff yet with pronounced elastic recovery.

Tear strength of 60 N/mm (ISO 34-1) and high damping characteristics make the material suitable for conveyor components, wear profiles, drive profiles and parts under cyclic loading. Very good low-temperature flexibility and resistance to mineral oils, greases and many solvents. As an ester-based TPU, it requires drying before processing to a residual moisture content below 0.02 %.

Key properties

• Hardness 95 Shore A (±3) / 23 Shore D (±1.5) — ISO 48-4
• Tensile strength 42 MPa, elongation 572 % (ISO 527) — a rare combination for the 95A class
• Tear strength 60 N/mm (ISO 34-1), tear force 250 N (ISO 1131)
• Elastic modulus 108 MPa (ISO 527)
• Pronounced damping and elastic recovery
• Very good low-temperature flexibility
• Resistance to mineral oils, greases and many solvents
• Halogen-free, suitable for reprocessing of segregated waste

Applications

• Gaskets and seals, wear profiles and linings
• Industrial rollers, conveyor belts and pads
• Hydraulic hoses, cable sheathing
• Sports equipment requiring high elastic recovery
• Protective profiles for drives and heavily loaded assemblies

Processing recommendations

Injection molding. Zone 1 — 185 °C, Zone 2 — 190 °C, Zone 3 — 195 °C, Zone 4 — 200 °C, nozzle — 195 °C.

Extrusion. Zone 1 — 180 °C, Zone 2 — 185 °C, Zone 3 — 190 °C, Zone 4 — 195 °C, die — 200 °C.

Drying. As an ester-based TPU, it requires mandatory drying at 80–100 °C for 2–3 h in a hopper dryer with fresh or dehumidified air. Residual moisture must be below 0.02 %.