Silicone Rubber Sheet | Rolls & Strips | National Silicone

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NS-120 Cellular Silicone Foam

A HT-800 foam replacement. Fully passes the ASTM D1056 2D2. UL 94 V-0 listed. Is compliant with AMS 3195 and FDA regulation 21 CFR 177.2600.

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Silicone Rubber Sheet

About National Silicone

National Silicone, a brand by GCP Industrial Products, is one of North America’s leading providers of silicone rubber sheet. In particular solid silicone sheet, closed cell silicone sponge and open and closed cell silicone foam.

Our premium performance materials are produced to international standards and are used with confidence in a diverse range of industries. We understand quality and consistency are the key to reliability which leads to material success in critical applications.

If you are a business that distributes, converts, fabricates or manufactures silicone, we can supply you from our existing product line or work with you to discover and develop the silicone products you need.




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, Electrically Conductive, Fiberglass Reinforced 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 Grades

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.

Cellular Silicone Foam

Ultra Soft, Extra Soft, Soft, Medium, Firm, Extra Firm, Automotive Grades

Our series of cellular 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

99.98% Quality Delivered in 2023

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 2023 we delivered 99.98% quality to our customers. Hence, only 0.02% of the material we delivered was claimed for credit against the purchases our customers made.

Quality Policy

We pride ourselves on providing high quality products to our customers that are consistent with our published product specifications as well as relevant legal and regulatory requirements. Our entire organization is responsible for quality control through our Quality Management System seeking continual improvement by regular review, with all partners being encouraged to cooperate. We are committed to achieving customer satisfaction by the use of quality procedures which are operated to meet or exceed the requirements of the current version of ISO 9001.


Why Work With Us

Fast, Supportive, Knowledgeable

We deliver performance 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 partner converters and distributors. This group is armed with the tools and resources to ensure our shared end users receive the best possible experience.


National Silicone Solid Silicone Rubber Sheet


Focused on Partnerships

We support our customers, and prospects throughout the purchase journey. Our team is made up of experienced professionals and highly trained engineers who will help with material selection, sampling, testing, and any application support you might need to accomplish your goals.




Speak with a product specialist about your needs

Call 1-888-814-6599

Certifications, Associations, and Accreditations

ISO 9001:2015

This certification showcases an organization’s dedication to quality management, boosting competitiveness, building customer trust, and driving sustainable growth. It establishes effective systems for performance monitoring, risk management, and customer satisfaction improvement while adhering to international standards.

Gasket Fabricators Association

The GFA is a professional organization uniting manufacturers, suppliers, and experts in the gasket fabrication industry. It fosters collaboration, knowledge sharing, and innovation through networking events, conferences, and workshops. The GFA sets industry standards, best practices, and regulatory compliance to ensure top-notch gasket products.

QMFZ2.E357733 & JMLU2.MH65861

The UL Recognized mark signifies that a product has been thoroughly tested and meets safety standards set by Underwriters Laboratories (UL). It assures consumers and authorities that the product is safe, reliable, and compliant with relevant industry standards.

GM Logo - National Silicone

This specification covers silicone foam materials used for sealing various components within vehicles. Our automotive sponge grade is approved and listed on the international General Motors MATSPC database.

UL Logo - National Silicone
UL 94 HB & UL 94 V-0

These flammability test standards measure the self-extinguishing time of a horizontally or vertically oriented polymer. We offer UL 94 HB and UL 94 V-0 compliant silicone sponge grades and foam grades.

SAE International Logo
AMS3195, AMS3196, AMS3320

SAE International is a global association of more than 128,000 engineers with expertise in standards development for the aerospace, automotive and commercial-vehicle industries. We offer solid silicone and silicone sponges that are in accordance with AMS3195, AMS3196 and AMS3320 specifications.

FDA Logo
FDA 21 CFR Section 177.2600

This standard covers indirect food additives which can be generally recognized as a safe for repeated use in contact with food. Our FDA solid silicone and NS-100/NS-120 silicone foam grades are compliant with this regulation.

ASTM D1056 2D2, ASTM D2000 GE

These two specifications cover standards for flexible cellular sponge materials (ASTM D1056), and rubber products for automotive applications (ASTM D2000). We offer silicone sponges/foams and solid silicone sheeting that is in accordance with these specifications.

Akron rubber development laboratory

ARDL is a leading international laboratory dedicated to providing testing, development and problem solving services to all facets of the rubber and plastic industry. National Silicone uses ARDL laboratory for 3rd party testing and development.