Flexible thermoplastic polyurethane for parts that must bend, seal, grip and survive repeated deformation. Grades and parameters are confirmed per project with their approved spec sheets — not listed as stable catalogue supply.
| Grade | Status | What is published | Next step |
|---|---|---|---|
| TPU grades | Confirmed per project | Hardness / diameter / colour confirmed with approved TDS; 1.75 mm ±0.02 mm shared diameter family | Paid sample with your test conditions |
| Other hardness grades | On request | Full parameters released with the approved TDS — we do not publish estimated values | Tell us your target hardness and use case |
Why so sparse on purpose: flexible filament performance depends heavily on the exact compound, printer setup and part geometry. Rather than copy generic numbers, we publish what is confirmed and let your validation fill in the rest.
Grades confirmed per project · specs with approved TDS
Firm-flexible grades (often discussed around Shore A 90–95) sit at the firmer end of flexible 3D printing — flexible enough for living hinges, seals and grips, stiff enough to print with fewer feeding compromises than softer grades. Exact hardness is confirmed per project.
TPU grades are named after their Shore hardness — a durometer measurement of how deeply a standardized indenter presses into the material. Higher numbers mean firmer compounds.
| Shore A band | Feel | Typical parts | Printing consideration |
|---|---|---|---|
| ≈ 85A and softer | Very soft, elastic | Gaskets, soft grips, wearables | Slowest feeding; direct drive strongly preferred |
| 90A–95A | Firm-flexible | Living hinges, tires, bumpers, couplings | Balanced flexibility and printability |
| ≈ 98A and up | Near-rigid flexible | Caster wheels, impact mounts | Closer to rigid-filament handling |
Grade names state the scale and the number — a “95A” rating (when offered) is measured on the Shore A scale with a specific durometer method and is confirmed for each grade in its TDS. Rigid filaments use Shore D instead, so the two scales are never compared directly.
Flexible filament is where printer differences matter most. Before any volume order, validate on the machines that will run production.
Pellet drying, extrusion, vacuum sealing and packing under one quality system, with written inspection records for every batch — the same lines that produce your TPU samples.
Documents: TDS/SDS availability and batch documents on request — see Resources. Validation method: Product Validation. Validating for a machine lineup? Printer-brand programs.
