National Silicone - Silicone Foam

Designed to handle demanding automotive environments.

Our automotive purposed silicone foam (30-SIL-MFM) was approved and listed for GMW16392 Class 2 Type 2 on the international General Motors MATSPC database. Leveraging 10+ years of experience and engineering capability, we developed a silicone foam fully meeting the demanding GM standard. In areas such as tensile strength and elongation the product far exceeds any minimum requirements or expectations.

National Silicone Website
For more information on this product line visit

Product Available
‣ Medium Density (6-14 psi)
View Datasheet

GWM16392 Specification Description
This specification covers silicone foam materials used for sealing various components within vehicles. These silicone foam materials are recommended for applications where the operating temperature range is -55 °C to +200 °C. Materials can be produced in continuous rolls, sheets, or cast bun blocks.

    • Material Class II: Closed Cell Foam.
    • Material Definition: Type 2 – This is a medium modulus (medium cellular) foam, which can be easily compressed and used as noise isolation and as an air, dust, and fluid seal.

Rechargeable Energy Storage Systems
This silicone foam also meets the rechargeable energy storage systems (RESS) requirements for compression set and water impermeability, making it safe to use in electric and hybrid electric vehicles. Best suited for use in fluid and dust seals, vibration isolation and battery cell alignment.

Material Benefits
The special properties of this material make it outstanding for the automotive market. These include, excellent water impermeability under high and low temperatures, low compression set, and resistance to long-term environmental conditions. It’s other high-performance properties include:

    • Operating temperature range: -103°F to 450°F.
    • Outstanding environmental resistance to: chemicals, water, wind, rain, salt, abrasion and ultraviolet radiation.
    • Remarkable sealing ability: provides a watertight seal and is not negatively affected by fresh or saltwater.
    • All told, this silicone material delivers the strength, resistance and durability automotive manufacturers can rely on for their quality needs.

Automotive Applications
This material is used as a primary seal for air, dust, and fluids, where exposure to high temperatures and/or low compression set is required. Applications include:

‣ Battery tray cover
‣ Battery seals
‣ Radiator seals
‣ Headlamps seals
‣ High temperature li-ion battery seal
‣ Engines gaskets

Can’t Find What You Are Looking For?
Have a question about our automotive silicone foam? We want to get you the answer. Please call 888-893-5427 or send us an email.



Other Products By GCP

Silicone Sheet    Silicone Sponge     Closed Cell Sponge   

Solid Sheet Rubber     Other




Start Using GCP Products Today

Experience the quality and performance for yourself. Get started with GCP today by receiving a free product sample for you to use and test.

Free Sample