Flexible 80A Resin 1 L


Whether you’re optimizing your manufacturing process, rapidly iterating through designs, or assessing form, fit, and function, Formlabs Engineering Resins are formulated to withstand extensive testing and perform under stress.

Flexible 80A Resin is the most stiff soft-touch material in our library of Flexible and Elastic Resins, with an 80A Shore durometer to simulate the flexibility of rubber or TPU. Balancing softness with strength, Flexible 80A Resin can withstand bending, flexing, and compression, even through repeated cycles.

The “80A” in the name represents the material’s Shore durometer. If you need a less stiff flexible material, try Elastic 50A Resin

Flexible 80A Resin is a reformulation of Flexible Resin. Flexible 80A Resin offers more advanced mechanical properties and a new look. 

Available for Form 3, Form 3B, Form 2.
Supports print resolutions: 100 and 50 microns.
Post-curing required.
Compatible with any Form 3/3B Resin Tank.
Requires Resin Tank LT for Form 2.

  • Flexible 80A Resin 1 L
Hand produced in Flexible 80A Resin

Why Choose Flexible 80A Resin?

Create silicone, urethane and rubber-like parts. Produce flexible parts in-house in a matter of hours, replacing outsourcing and molding.


Leverage bendable parts that return to shape slowly.

Soft and Strong

Stretch and compress parts through repeated cycles without cracking.


Create objects that are clear, providing visibility into the model.


Support user testing with looks and feels like prototypes that can be put to the test.


Flexible 80A Resin is ideal for hard, flexible prototypes and a great alternative to mold making.

Consider Flexible 80A Resin for:

Handles, grips, and overmolds
Seals, gaskets, and masks
Cushioning, damping, and shock absorption
Cartilage, tendon, and ligament anatomy

Material Properties*

BioMed Flex 80A Resin

Ultimate Tensile Strength

7.2 MPa

Stress at 50% Elongation

2.6 MPa

Stress at 100% Elongation

4.5 MPa



Tear Strength

22 kN/m

Hardness Shore A


Material properties may vary based on part geometry, print orientation, print settings, and temperature. Data was obtained from parts printed on a Form 3 with 100 µm Flexible 80A settings, washed in a Form Wash for 10 minutes, and post-cured at 60°C for 10 minutes in a Form Cure.


Form Wash Settings


10 minutes + 10 minutes


Wash parts printed in Flexible 80A Resin in two cycles, preferably using fresh solvent for the second wash. When washed in TPM, Flexible 80A Resin remains waxy when printed at any layer thickness and requires post-cure. Post-curing removes the waxiness.

Form Cure Settings


10 min



60 °C


For parts printed in an engineering-focused resin (such as those in the Rigid, Tough & Durable, and Flexible & Elastic families), post-curing ensures that the parts reach their optimal mechanical properties and can function as designed. There is only one recommended post-curing time for Flexible 80A Resin.