Silicone 40A Resin is the first accessible 100% silicone 3D printing material, using Formlabs’ patent-pending Pure Silicone Technology™. Eliminate molding and labor-intensive casting processes and 3D print pure silicone parts in-house, in a matter of hours.

With this 40A Shore durometer material, you can fabricate soft, pliable, and durable parts with a 230% elongation at break and a 12 kN/m tear strength that can withstand repeated cycles of stretching, flexing, and compression.

Combine the high performance of silicone and the design freedom of 3D printing to create highly functional silicone parts with excellent chemical and thermal resistance (-25°C to 125°C), fine features as small as 0.3 mm, and complex geometries that are not possible with traditional methods.

Why Choose Silicone 40A Resin

The First Accessible 100% Silicone 3D Printing Material

Silicone 40A Resin is a pure silicone, without added monomer or acrylate, enabled by Formlabs’ new patent-pending Pure Silicone Technology™. Silicone 40A Resin combines the superior material properties of cast silicone with the benefits of 3D printing.

Outstanding Elastomeric Performance

Fabricate soft, pliable, and durable parts with a 230% elongation at break and a 12 kN/m tear strength that can withstand repeated cycles of stretching, flexing, and compression. Produce highly functional silicone parts with excellent chemical resistance and thermal stability (-25°C to 125°C).

Cost-Effective Rapid Prototyping and Low Volume Manufacturing

Eliminate tooling and labor-intensive casting processes to enable custom and low-volume manufacturing of silicone parts.

Newfound Design Freedom

Create customized silicone parts with isotropic properties, fine features as small as 0.3 mm, and complex geometries that aren’t possible with casting or molding.

Fast and Easy Fabrication

Benefit from the streamlined Formlabs SLA ecosystem to produce pure silicone parts in-house, in a matter of hours.

Applications

Silicone 40A Resin is a cost and time-effective solution for fabricating functional prototypes, validation units, tooling, and small batches of silicone parts. Parts printed in Silicone 40A Resin are soft, durable, with excellent elasticity, chemical resistance, and thermal stability. They are used in industries such as consumer goods, automotive, robotics, manufacturing, and healthcare.

Consider Silicone 40A Resin for:

Seals, gaskets, grommets, connectors, and dampeners for automotive, robotics, and manufacturing.
Wearables, handles, and grippers for consumer products.
Customized prosthetics, orthotics, audiology models, and medical devices.
Flexible fixtures, masking tools, and soft molds for casting urethane or resin.

Material Properties

Post-cured for 45 minutes at 60 ºC in a beaker of water

Shore Hardness: 40A

Ultimate Tensile Strength: 5.5 MPa

Elongation at Break: 230%

Tear Strength: 12 kN/m

Rebound Resilience: 34%

Glass Transition Temperature (Tg): -110 °C

Ross Flexing Fatigue (-10 °C, notched): > 500,000 cycles

Ross Flexing Fatigue (23 °C, notched): > 500,000 cycles

Cytotoxicity: Pending

Produits

Silicone 40A Resin V1 1L (Form 4)

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