Flexible PlasticsFlexibleBiomedicalHeat resistantChemical resistant
Spectroplast® TrueSil
Spectroplast TrueSil is an industrial-grade, 3D-printable LSR (liquid silicone rubber) known for its exceptional flexibility, biocompatibility, and long-term durability. Unlike thermoplastic elastomers (TPE or TPU), TrueSil elastomers are made of 100% pure silicone and fulfill market standards in terms of performance and surface quality. They maintain stable mechanical properties across a wide temperature range from -50 °C to +200 °C. The material provides excellent elongation at break, rebound elasticity, and resistance to UV, ozone, and aging. TrueSil is certified for skin and food contact applications (ISO 10993 and USP Class VI), making it suitable for both medical and consumer-grade products. It's frequently used for seals, gaskets, cushioning components, wearable devices, prosthetics, and other parts requiring soft-touch functionality and repeated deformation.
Available finishes
Each finish can be combined with the available colors at checkout.
TrueSil A20
1 colorTrueSil A20 is the softest silicone in the family, ideal for cushioning, wearables, and skin-contact parts. Its Shore A 20 hardness offers excellent elasticity and deformation tolerance.
TrueSil A35
1 colorTrueSil A35 offers balanced flexibility and strength with Shore A 35 hardness – ideal for grips, housings, and soft seals that need durability without losing compliance.
