Thermally conductive rubber that combines the compliance and elasticity of soft silicone rubber with the thermal conductivity of metal




Thubber is an elastomer composite that is softer than skin (elastic modulus < 100 kiloPascals), stretchable (strain limit > 600%), and thermally conductive (up to 10 Watts per meters-Kelvin).  These composites have the mechanical properties of soft silicone rubber and a thermal conductivity that approaches stainless steel.



Thubber has 50x the tear resistance of other soft elastomers like silicone rubber that have a similar compliance and elasticity.  This resistance to tearing comes from the high amount of mechanicalenergy required to propagate a tear.  The fracture toughness is over 10,000 Joules per square meter.


As electronics and electromechanical components become smaller, more powerful, and more pervasive, there is an increasing need for thermal interface materials (TIMs) that can transfer heat produced during operation.  These TIMs should be soft and deformable enough to minimize air gaps at the interface.


Arieca is Hiring

We’re currently looking to expand our team and have the following full-time positions:

  • Technical Sales – Lead efforts in high volume sales of Thubber; establish joint development agreements with industrial partners; duties include market discovery, customer & materials qualification, sales contract negotiation, and follow-up contact; must have technical familiarity in thermal management, polymers, and/or industrial materials processing.

  • Process Engineer – Lead scalable production of Thubber; participate in joint development of advanced rubber technologies with industrial partners; duties include acquisition of industrial-grade equipment for high volume Thubber production, laboratory scale synthesis of new rubber formulations, and development of scalable production methods for new rubber technologies.

  • Laboratory Technician – Assist current design and process engineers in the following tasks:  materials synthesis, testing, and qualification; refining and improving current manufacturing techniques; prototype design, fabrication, and testing for device or systems-level applications; design and synthesis of new rubber technologies

All positions start May 1, 2019.  Interested candidates should email the following to Navid Kazem (

  • Cover letter (1 page max) that summarizes background and interests

  • Resume or Curricula Vitae

  • Contact information for three references who we can contact for recommendation letters