Silicone 3D Printing

3D printed silicone comes in a variety of shore-A hardnesses and temperature ranges to fit your application

True Silicone structure

What is True Silicone?

True silicone is 100% pure silicone that is available in different shore-A hardness as detailed below. The material is suitable to produce both functional prototypes and end-use products, which can be used in a temperature range of -30°C to +180°C (-22°F to +356°F).

The material shows high resistance to harsh environments conditions, various acids, bases and nonpolar solvents. Silicone parts are water repellent, insulating, and have a high gas permeability.

 

Key Product Benefits

  • High temperature and wear resistance
  • Elasticity and high reproducibility after deformation or stress
  • Range of durometers (60A)
Sample of True Silicone

Applications for 3D-Printed Silicone

True silicone is well-suited for small prototyping runs before investing in tooling for injection molding or manufacturing silicone parts with complex, organic geometries. Typical parts include:

  • Seals, gaskets, and grommets
  • Keypads and buttons
  • Surgical models
  • Dental liners

Silicone 3D Printing Properties

Property Test Method Value
Shore-A Hardness ISO 7619-1 35 50 60
Density ISO 1183-1 A 2.10  lb/in3 2.15  lb/in3 2.19  lb/in3
Tensile Strength ISO 37 Type 4 1,450 psi 1,233 psi 1,160 psi
Elongation at Break ISO 37 Type 4 950% 550% 320%
Tear Strength ASTM D624 Type C 60 lbf/in. 51.4 lbf/in. 80 lbf/in.
Property Test Method Value
Shore-A Hardness ISO 7619-1 35 50 60
Density ISO 1183-1 A 1.08 g/cm3 1.11 g/cm3 1.13 g/cm3
Tensile Strength ISO 37 Type 4 10 MPa 8.5 MPa 8 MPa
Elongation at Break ISO 37 Type 4 950% 550% 320%
Tear Strength ASTM D624 Type C 10.5 N/mm 9 N/mm 14 N/mm

True Silicone Comparison to Common Elastomers

true silicone material comparison
Soft (30-35A) material comparison.

true silicone material comparison
Harder (60-70A) material comparison.

Design Considerations

Our basic guidelines and design considerations for 3D-printed silicone will help ensure a manufacturable part and overall quality.

  US Metric
Maximum Part Size 4.7 in x 2.8 in. x 3.9 in. 119.38mm x 71.12mm x 99.06mm
Minimum Feature Size X-Y Plane: 0.01 in.
Z Plane: 0.016 in.
X-Y Plane: 0.25mm
Z Plane: 0.40mm
Minimum Thickness Supported Walls: 0.012 in.
Unsupported Walls: 0.02 in.
Supported Walls: 0.30mm
Unsupported Walls: 0.50mm
Tolerances The tolerances for well-designed parts in the X / Y / Z direction are +/- 0.004 in. for first inch plus 0.1% of nominal length The tolerances for well-designed parts in the X / Y / Z direction are +/- 0.1mm for first inch plus 0.1% of nominal length