Technical Specifications
Typical Applications
- Flexible seals and mounts
- Vibration dampers and buffer elements
- Roller and running surfaces
- Protective elements with elastic reserve
- Flexible housing elements and connectors
Material Documents
Material Profile
TPU 90A is the balanced all-rounder in the TPU lineup. With Shore hardness 90A, the material offers a good compromise between the high elasticity of 85A and the better printability of stiffer variants.
The material is particularly well suited for applications requiring both flexibility and mechanical load capacity: flexible mounts, vibration dampers, roller running surfaces or protective elements that should be deformable but not excessively soft.
What Does Shore Hardness Mean?
Shore hardness describes the indentation hardness of elastic plastics. For TPU, the simplified rule is: the lower the Shore A value, the softer and more flexible the material. Higher values mean more shape stability and better printability.
Important: The actual flexibility of a part depends not only on Shore hardness but also on part geometry, wall thickness, infill density, print direction, temperature and the specific manufacturer’s filament.
TPU Variant Comparison
| Material | Shore hardness | Flexibility | Printability | Typical application |
|---|---|---|---|---|
| TPU 85A | 85A | very flexible | demanding | soft seals, dampers, protective caps |
| TPU 90A | 90A | flexible | medium | seals, mounts, vibration dampers |
| TPU 95A | 95A | semi-flexible | good to medium | technical flexible parts, protective parts |
| TPU 98A | 98A | slightly flexible | good | robust tough-elastic functional parts |
Design Notes for TPU 90A
The perceived flexibility of a part depends strongly on wall thickness, infill and geometry – not on Shore hardness alone. Please specify the application and desired behavior when requesting a quote for optimal design.
Datasheet
Technical datasheet (Polymaker PolyFlex TPU90): polymaker.com/downloads