TPU (Flexible)

Overview

FDM TPU (Thermoplastic Polyurethane) produces flexible, rubber-like parts directly from the printer. With a range of Shore hardness options from very soft (85A) to semi-rigid (95A), FDM TPU is a cost-effective way to produce custom flexible components.

Key Properties

FDM TPU offers elongation at break up to 500%, excellent abrasion resistance, and good tear strength. Shore A hardness typically ranges from 85A to 95A depending on the specific TPU grade and infill settings.

Advantages

• Excellent flexibility and elasticity
• Good abrasion and tear resistance
• Most affordable flexible 3D printing option
• Available in multiple Shore hardness levels
• Good vibration damping properties

Limitations

• Slower print speeds required for quality results
• Layer lines more visible than with rigid materials
• Lower dimensional accuracy than rigid FDM materials
• Stringing and oozing can affect surface quality

Common Applications

Phone cases, grips and handles, vibration dampeners, protective bumpers, flexible ducts, wearable device bands, shoe insoles, gaskets, and custom seals.