Formlabs Flexible 80A Resin Cartridge


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 stiffest soft-touch material in Formlabs' 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 more 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.

Compatible with any Form 3/3B resin tank. Requires LT Resin Tank for Form 2.

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Model RS-F2-FL80
Manufacturer Formlabs


Mechanical Properties Green² Post-Cured³
Ultimate Tensile Strength 3.7 MPa 8.9 MPa
Stress at 50% Elongation 1.5 MPa 3.1 MPa
Stress at 100% Elongation 3.5 MPa 6.3 MPa
Elongation at Break 100%  120%
Shore Hardness 70A 80A
Compression Set (23 °C for 22 hours) Not Tested 3%
Compression Set (70°C for 22 hours) Not Tested 5% 
Tear Strength 11 kN/m 24 kN/m
Ross Flex Fatigue at 23 °C Not Tested >200,00 cycles
Ross Flex Fatigue at -10 °C Not Tested >50,00 cycles
Thermal Properties    
Glass transition temperature (Tg) Not Tested 27°C


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