Silicone Rubber Sheet | Rolls & Strips | National Silicone

NS-120 Liquid Silicone Foam

A medium-firm silicone foam cast from liquid silicone. Fully passes the ASTM D1056 2D2. UL 94 V-0 rated. Is compliant with AMS3195 and CFR 177.2600.

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Solid Silicone Sheet

Our general purpose silicone sheeting is designed to deliver a long service life and provide exceptional performance.


Automotive Foam

Approved and listed for GMW16392 Class 2 Type 2 on the international General Motors MATSPC database.

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Silicone Rubber Sheet

About National Silicone

National Silicone specializes in silicone rubber. In particular solid silicone sheet, closed cell silicone sponge and closed cell silicone foam.

Our products are designed for premium performance and are an ideal choice for gaskets, seals and vibration management applications in industries ranging from automotive to food & beverage to military & defense.

Produced at a former Dow Corning facility, we understand quality and consistency are the key to reliability which leads to material success in critical applications.

Rubber & Plastics News

Article: GCP Continues to Exceed Expectations
National Silicone is a brand by GCP Industrial Products

Silicone Sheet Rubber Sample Board - National Silicone

Our Products

We offer four product categories in the National Silicone product line. They include:


Solid Silicone Sheeting

Commercial, FDA, ZZR Grades

Our series of solid silicone sheet are constructed using a high silicone polymer mixture which translates to exceptional performance across all durometers. Designed with a long service life in mind, these materials provide excellent resistance to chemicals, fluids, and extreme temperature environments. Manufactured in continuous rolls, in standard and specialty grades, with a smooth surface finish on both sides. These products are currently available for sale in North America, Europe & Asia.


Closed Cell Silicone Sponge

Soft, Medium, Firm, Extra Firm, Flame Retardant

Our closed cell silicone sponges are excellent for conditions that require a soft compressible material with high-performance properties. Providing extra strength and durability, these materials are versatile and are ideal for extreme temperature environments in gaskets and sealing applications. Manufactured in continuous rolls, in four firmness grades, with a fabric impression surface finish on both sides. These products are currently available for sale in North America, Europe and Asia.

closed cell Silicone Foam

Soft, Medium, automotive grades

Our series of closed cell silicone foams are engineered for longevity and high performance. They excel in conditions that require low compression set, high temperature stability, low temperature flexibility and need to be UL 94 flame rated. Manufactured in continuous rolls in various grades, with both a smooth and fabric impression surface finish (depending on the grade). These products are currently available for sale in North America, Europe and Asia.


Silicone BASE


We offer silicone base for many standard high temperature vulcanizing (HTV), high consistency rubber (HCR) and liquid silicone rubber (LSR) grades. Perfect for use in your own mixing and compounding operations. These products are currently available for sale in North America, Europe & Asia.

Grades available include:

  • Anti Static for Molding
  • Electrical Insulating for Molding
  • Food Contact Grade for Molding
  • High Rebound Grade for Molding
  • High Strength Grade for Molding
  • Ultra Low Hardness for Molding
  • General Purpose for Molding & Extrusion
  • Modified Rubber for Molding & Extrusion
  • Flame Retardant for Molding, Extrusion & Fumed Grades
  • Fumed High Strength & High Transparency for Molding & Extrusion
  • High Temperature Resistant Silicone for Standard, General & Fumed Grades
  • Self Lubricating Rubber for Fumed, Fumed High Strength & Precipitated Grades

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products in development

coming soon

We are continually working to expand the number of high performance silicone products we can offer to our customer and the marketplace. Below is a high level overview of the materials we are currently working on commercializing. If you have a question about one of these items please contact us and we will be happy to give you more details.

  1. Fiberglass solid sheet: AMS3320
  2. Fiberglass sponge sheet: AMS3195
  3. High strength solid sheet: ZZR-765 / A-A-59588B Class 3B
  4. Fluorosilicone solid sheet: MIL-R-25988B Type 2 Class 1
  5. Reversion resistant: N/A
  6. Medical grade: USP Class VI & FDA 21 CFR 177.2600

99.72% Quality Delivered in 2020

Our customers rely on an uninterrupted supply of quality consistent silicone materials in order to keep their customer base happy, and machines running smoothly. As a result, in 2020 we delivered 99.72% quality to our customers. Hence, only 0.28 percent of the material we delivered was claimed for credit against the purchases our customers made.


Why Work With Us

Fast, Supportive, Knowledgeable

We deliver quality silicone materials to help businesses and their customers thrive. This means providing silicone rubber strong enough to hold up through the toughest working conditions.

Whether you’re looking for cushioning, insulation, sealing, noise reduction or any other of the many benefits silicone can provide, we have the service, application knowledge and inventory to get you exactly what you need.

With end users ranging from the largest OEM’s in the world to small independents, our focus of delivering on quality, price and responsiveness has been critical to the success of our silicone in the industrial marketplace.

The best business decisions are well-informed ones, which is why National Silicone materials are sold through a network of preferred converters and distributors. This exclusive group is armed with the tools and resources to ensure our shared end users receive the best possible experience.

Silicone Sponge Sheeting Rolls - National Silicone

Technical Support

If you need help with an application, engineering, or material selection, our team will work with you to figure it out.

View Silicone Uses

5 Million in Inventory

We ensure the effective supply of silicone throughout North America by partnering with expert service-oriented organizations.

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Benefits of National Silicone Products

  • Resistant to extreme temperatures, UV and ozone
  • Excellent weathering and heat aging characteristics
  • Thermal and electrical insolating properties
  • UL 94 V-0 and HB rated for flame resistance
  • General purpose grades for demanding applications
  • Specialty grades for high performance environments


Speak with a product specialist about your needs

Call 1-888-814-6599