TPU and PETG are both "tough" materials, but they solve opposite problems. Here's the honest comparison so you buy the right one (or both).
The core difference
PETG is rigid and strong — it holds shape under load, resists chemicals and survives impacts without shattering. TPU (95A) is elastic — it bends, absorbs shocks, grips and springs back, but won't hold a load without support.
| Property | PETG | TPU 95A |
|---|---|---|
| Stiffness | High | Low (flexible) |
| Impact absorption | Good | Excellent |
| Chemical resistance | Excellent | Good |
| Elongation | ≈220% | ≈450% |
| Print difficulty | Easy–moderate | Moderate (slow speeds) |
| Heat resistance | 70 °C HDT | Low (use ASA/ABS for heat) |
Choose PETG when
Brackets, enclosures, vases, protective cases, parts that must stay rigid and survive weather and chemicals.
Choose TPU when
Phone cases, gaskets, seals, vibration dampers, robot wheels, strain reliefs — anything that must flex millions of cycles.
Real-world advice
Most print farms stock both: PETG for structural parts, TPU for anything that touches or absorbs. VOXFIL supplies PETG and TPU at factory-direct prices, and both are open-compatible with every printer.