Skip to main content

How Momentive Silicone Elastomers Empower Electric Vehicles

The automotive industry faces an electric revolution as it prepares for a new era of mobility. Autonomous driving, connectivity, electrification, artificial intelligence, digitalization, and mobility as a service are all growing trends within the automotive industry. And automotive OEMs are pivoting to meet these growing trends and challenges. 

The electric vehicle market has seen tremendous growth due to changes in consumer trends and new innovative technology fabricating longer-range and better-performing vehicles. Momentive performance silicone elastomers are poised to assist this rapidly growing market. In the next couple of years, automotive OEMs are sprinting to deliver their variant of electric vehicles that can outperform the existing benchmark and focus on building the future of renewable energy infrastructures for these vehicles. 

Current combustion engine vehicles contain highly advanced electrical and electronic parts that now perform essential performance functions. However, the electronic sensors on these traditional vehicles are crucial in maintaining a solid foundation. Momentive silicone solutions have provided combustion vehicles with outstanding chemical, heat, and weather resistance for new-age electronic sensors, cables, and traditional fluoroelastomer engine seals. With the shift in focus towards electrification and technological advancements, Momentive performance silicone elastomers can continue to produce exceptional performance properties for new electric cars. Silicone elastomers support many e-mobility components while providing high-performance benefits such as longevity, reliability, and durability. Momentive silicone materials assist electric vehicle components by providing thermal management, sealing, and bonding capabilities, and protecting sensitive assembly technology that makes e-mobility vehicles.  



Momentive silicone elastomers offer unique ready-to-use capabilities for demanding performance requirements in the EV market, such as their liquid silicone rubber (LSR) and high-consistency rubber (HCR) grades. Silicone elastomer additives solve complex e-mobility manufacturing challenges from temperature requirements to governmental regulatory standards. Automotive applications such as electrical connectors will face increasing scrutiny and expectations for long-lasting reliability, durability, and service life. By enhancing thermal management, battery solutions, cables, connector materials, sensor coatings, and adhesives, Momentive's performance silicone elastomers will help drive electric vehicles into the future.


The Silopren™ LSR series is a versatile portfolio of two-component liquid silicone rubber typically recommended for injection molding processes. Liquid silicone rubber (LSR) is curable, pumpable, and thermally resistant to extreme temperatures. With fast mold cycles and the ability to be molded and cured to exact dimensions, this silicone technology offers outstanding performance for e-mobility automotive manufacturers.


Momentive's LSR portfolio of self-lubricating grades enables various electrical connector applications within the electric vehicle. Silopren™ LSR materials encompass low molecular weight, low compression set, and thermal resistance for demanding automotive environments. 

Silopren™ LSR portfolio also exhibits self-bonding technologies, allowing electric vehicle design engineers to leverage the two-component and hard-soft design systems. This self-bonding capability provides seamlessly integrates between engineering thermoplastic design while ensuring vital seal placement and performance. Silopren LSR™ 2740 grade is an ideal two-component, self-lubricating silicone rubber for electric vehicle connectors and sealing components. 

Momentive Solutions for E-Mobility

Grade Appearance Density
(Shore A)
Tensile Strength
Tear Strength Compression Set
Silopren™ LSR 2030 Translucent 1.11 31 8 800 18 15*
Silopren™ LSR 2040 Translucent 1.12 40 9 750 25 25*
High Productivity LSRs
Silopren™ LSR 2630 Translucent 1.10 32 8 700 35 15
Silopren™ LSR 2640 Translucent 1.12 42 8 600 40 25
Silopren™ LSR 2650 Translucent 1.12 52 10 550 50 25
Silopren™ LSR 2660 Translucent 1.13 62 9 400 45 20
Self-Bonding/Two-Component & Self-Lubricating/Self-Bonding
Silopren™ LSR 2740 Translucent 1.11 38 9.3 700 20 25
LIM™ 6010 Translucent - 10 2.76 510 32 -
LIM™ 6030 Translucent - 30 8.3 750 28.1 50
LIM™ 6040 Translucent - 40 8.3 650 40.4 40
LIM™ 6045 Translucent - 42 8.3 650 40.4 25
LIM™ 6050 Translucent - 50 8.6 575 43.9 35
LIM™ 6061 Translucent - 60 9.4 470 40.3 27
LIM™ 8040 Translucent 1.08 43 5.2 385 37.8 27*


Silopren™ LSR can reduce vulcanization temperature while keeping an equivalent crosslinking. With a vast portfolio of LSR grades, Momentive performance materials include the following benefits:

  • High thermal and dielectric stability
  • Outstanding aging resistance
  • Easy to pigment
  • Self-bonding and rapid cure rate
  • Dielectric insulating properties
  • Increase crack resistance and weatherability
  • Low compression set without post-cure
  • Lightweight allowing for EV-mileage performance benefit


Momentive performance materials are the preeminent silicone elastomers for EV manufacturers and automotive OEMs. Their portfolio of liquid silicone rubber (LSR) and heat-cured rubber (HCR) encompass unique proficiencies that equip electric vehicles with safety and reliability. Momentive's technology bolsters an array of EV solutions below: 

  • High-Voltage Battery Systems
  • ​Electrified Powertrain Components
  • Electric Vehicle Fuel Cell Seals
  • EV Insulations and Connectors
  • Two-Component Systems
  • EV Charging Cables and Wires


The automotive future is here, and OEMs are racing to electrify their fleets. EVs are the future of automotive technology, and manufacturers need reliable, safe, and long-lasting materials to keep pace with the race toward electrification. ChemPoint has a technical specialist to discuss how Momentive performance materials can support your EV application and formulation today. 

Get a Sample

Phone   425.372.9328


Hi, let us know if you have any questions as you visit our website.

ChemPoint reps are here to assist you