Automotive Silicone Solutions: From Seals to EV Thermal Management

automotive silicone

Automotive silicone solutions have become essential to the industry, delivering reliable performance under extreme temperatures, pressures, and mechanical stresses. As vehicles become more advanced and electric vehicle (EV) adoption increases, so does the demand for high-performance elastomers that can meet evolving technical requirements.

Reiss Manufacturing, a U.S. based leader in silicone rubber manufacturing, provides custom automotive silicone compounds and components to OEMs and Tier 1 suppliers. Our solutions support a wide range of vehicle systems, from internal combustion engines to cutting-edge EV platforms.

The Evolving Role of Silicone in the Automotive Industry

Silicone plays a central role in enabling durable, efficient, and high-performance automotive systems. Its unique material properties, thermal resistance, chemical stability, and electrical insulation, make it ideal for a broad range of applications.

Reiss Manufacturing develops and supplies silicone materials that are engineered to support automotive innovation, increase component lifespan, and streamline manufacturing processes.

Why Silicone is the Material of Choice

Automotive environments are demanding, with components exposed to heat, oil, vibration, and harsh chemicals. Silicone withstands these challenges with minimal degradation, offering long-term reliability in sealing, insulation, and protective applications.

We formulate our high-consistency rubber (HCR) silicone to deliver:

  • Stability at high temperatures
  • Resistance to oil and fuel
  • Excellent compression set
  • Low maintenance and long service life

These properties make silicone a trusted solution for both conventional and electrified vehicle platforms.

Meeting OEM Demands with High-Performance Compounds

OEMs and Tier 1 suppliers require materials that meet strict regulatory and quality standards. We support these needs with silicone compounds that comply with industry standards and are designed for high-volume production.

With in-house R&D and custom compounding, we align material performance with specific design goals, supporting application needs such as:

  • Precision sealing
  • EMI shielding
  • Thermal insulation
  • Lightweight construction

Core Applications of Automotive Silicone

Reiss Manufacturing’s silicone materials are used in multiple vehicle systems where durability and performance are non-negotiable. These applications span mechanical, electrical, and electronic systems.

Seals, Gaskets, and O-Rings for Engine and Transmission Systems

Reliable sealing is critical in automotive systems exposed to thermal cycling, pressure changes, and fluid exposure. We supply molded silicone gaskets, O-rings, and seals that maintain integrity under high stress and vibration. These components are commonly used in engines, transmissions, and under-the-hood assemblies.

The material’s resistance to compression set and automotive fluids helps ensure long-term performance and reduced maintenance.

Silicone for Wire and Cable Insulation

Automotive electrical systems continue to grow more complex. Silicone compounds from Reiss provide flexible, high-dielectric insulation for wires and cables used in engine compartments and throughout the vehicle.

Silicone offers:

  • Heat resistance
  • Chemical stability
  • Flexibility in tight or moving assemblies

These properties are essential for maintaining consistent power delivery and signal integrity, especially in electric and hybrid vehicles.

EMI Shielding Materials for Connected Vehicles

As vehicles integrate more sensors, connectivity, and electronics, electromagnetic interference becomes a growing concern. We formulate conductive silicone materials used in EMI shielding gaskets and seals.

These materials provide both environmental protection and electrical conductivity, supporting applications such as, battery control units and infotainment systems.

Conductive silicone ensures compliance with automotive electromagnetic compatibility (EMC) standards and protects sensitive electronics.

Silicone in Electric and Hybrid Vehicle Platforms

The transition to electric and hybrid vehicles is reshaping material requirements across the automotive sector. Silicone is playing a pivotal role in enabling thermal regulation, insulation, and lightweighting in these next-generation vehicles.

Thermal Management for Battery and Powertrain Components

EV batteries and power electronics generate significant heat. We provide silicone materials that help manage these thermal loads, improving safety and performance.

Applications include:

  • Thermal interface materials
  • Heat-resistant gaskets
  • Seals for battery enclosures

Silicone’s inherent thermal stability and insulation properties support consistent temperature control and protection of sensitive systems.

Lightweighting and Heat Resistance in EV Designs

Reducing vehicle weight is critical for improving range in electric vehicles. Silicone materials from Reiss are engineered to deliver high performance while reducing overall part weight compared to traditional materials.

In addition to being lightweight, these materials offer the heat resistance needed for use in electric drive units and other high-temperature components.

Custom Silicone Compounding for Automotive Requirements

We distinguish ourselves through custom silicone formulation and compounding capabilities. All materials are developed in-house, giving customers control over the performance characteristics needed for specific applications.

In-House R&D and Material Formulation Capabilities

We work closely with automotive partners to develop silicone compounds that meet exact mechanical, thermal, and electrical specifications. Formulations can be adjusted to achieve specific properties, including:

  • Hardness
  • Tensile strength
  • Elongation
  • Electrical conductivity
  • Color matching

This level of customization allows us to support both standard and highly specialized automotive applications.

Benefits of Domestic Production and Rapid Delivery

Our U.S. footprint supports faster lead times, streamlined logistics, and easier communication with engineering teams. This is particularly valuable for OEMs and Tier 1 suppliers with tight project schedules or localized manufacturing operations.

Advantages include:

  • Faster prototyping
  • Reduced transportation risk
  • Compliance with U.S. manufacturing regulations

OEM and Tier 1 Supplier Collaboration

We partner with customers from design through production, offering engineering support, material guidance, and quality documentation. Whether the project requires a custom silicone formulation or a new part design, we deliver scalable solutions built to automotive standards.

Talk to Reiss Manufacturing About Automotive Silicone Solutions

We deliver high-performance automotive silicone materials and components that meet the evolving needs of combustion, hybrid, and electric vehicle platforms. With in-house R&D, ISO 9001:2015 certification, and domestic production capabilities, we help OEMs and Tier 1 suppliers meet performance and compliance goals with confidence. Contact us today to learn more about custom silicone solutions for automotive applications.

Automotive Silicone FAQs

Reiss supplies high-consistency rubber (HCR) silicone compounds used in sealing, insulation, EMI shielding, and thermal management applications.

Yes. All formulations are developed in-house and can be customized for hardness, color, electrical properties, and more.

Silicone offers heat resistance, electrical insulation, lightweight properties, and chemical stability, ideal for battery and powertrain systems.

Reiss operates U.S. based manufacturing facilities in Blackstone, Virginia.

Yes. Reiss manufactures conductive silicone materials used in EMI shielding gaskets and seals for automotive electronics.

Common parts include seals, gaskets, O-rings, cable insulation, EMI shields, and thermal covers.

With domestic production and in-house R&D, Reiss can rapidly prototype and deliver custom silicone components.

Start by contacting us through our contact page to discuss your application requirements.