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Silicone Rubber Sheets

Silicone rubber sheets represent the pinnacle of elastomeric materials, offering exceptional performance characteristics that surpass traditional rubber compounds in demanding applications. Our comprehensive selection includes specialized formulations designed for high-temperature environments, food processing equipment, medical devices, and industrial sealing applications where reliability is paramount.

The unique molecular structure of silicone rubber provides outstanding thermal stability, maintaining flexibility and sealing integrity across extreme temperature ranges from -80°F to +450°F. This remarkable temperature resistance, combined with excellent chemical inertness and low toxicity, makes silicone sheets the material of choice for critical applications in aerospace, healthcare, food processing, and electronics manufacturing.

Available in multiple grades including soft general-purpose sheets, high-strength reinforced formulations, closed-cell sponge for cushioning and insulation, and flame-retardant compounds for safety-critical applications. Each grade is manufactured to precise specifications with consistent thickness, surface finish, and physical properties to ensure optimal performance in your specific application.

Beyond our standard catalog offerings, our fabrication services provide custom die-cutting, waterjet cutting, and CNC machining capabilities to create complex shapes, gaskets, seals, and components from our premium silicone sheet materials, ensuring you get exactly the solution you need for your engineering challenge.

Silicone Sheet Properties

Temperature Range

Continuous Service: -65°C to +230°C (-85°F to +446°F)
Intermittent: Up to +300°C (+572°F)
Low Temperature Flexibility: Remains flexible at -80°C (-112°F)

Chemical Resistance

Excellent: Water, ozone, UV radiation
Good: Dilute acids and bases, alcohols
Poor: Concentrated acids, ketones, aromatic hydrocarbons

FDA & USP Compliance

FDA 21 CFR 177.2600: Food contact approved
USP Class VI: Medical device biocompatibility
ISO 10993: Biocompatibility testing standards

Durometer Range

Soft: 30-50 Shore A (general purpose)
Medium: 50-70 Shore A (standard)
Firm: 70-90 Shore A (high strength)
Sponge: Various densities available

Material Comparison

GradeBest ForKey FeaturesTypical Applications
Soft SiliconeGaskets, seals requiring conformabilityLow compression set, easy compressionMedical devices, food processing
High-StrengthHigh-wear applicationsEnhanced tear strength, durabilityIndustrial equipment, automotive
Silicone SpongeCushioning, insulationClosed-cell structure, compressibilityGaskets, vibration dampening
Flame RetardantSafety-critical applicationsUL 94 V-0 rated, low smokeElectronics, transportation

Custom Silicone Solutions

While our comprehensive catalog covers most standard applications, many engineering challenges require specialized silicone formulations or custom geometries. National Rubber Corporation's custom silicone manufacturing capabilities allow us to develop solutions that perfectly match your specific performance requirements and dimensional specifications.

Whether you need custom durometers, specialty additives for enhanced performance, FDA-compliant compounds for food contact, or medical-grade materials meeting USP Class VI standards, our technical team works closely with you to develop the ideal silicone solution for your application.

Technical Support

Our experienced engineers provide comprehensive technical support to help you select the right silicone material and fabrication method for your specific application. We offer material selection guidance, design assistance, prototyping services, and performance testing to ensure optimal results.

Quality Certifications

  • • ISO 9001:2015 Certified
  • • FDA Registration
  • • USP Class VI Compliant
  • • RoHS Compliant
Key Properties
  • Extreme temperature resistance (-80°C to +230°C)
  • FDA and USP Class VI compliant grades
  • Excellent chemical and UV resistance
  • Low compression set and high flexibility
  • Biocompatible and non-toxic formulations
Industries We Serve
Medical & Healthcare: Implantable devices, surgical tools, drug delivery systems
Food Processing: FDA-compliant gaskets, seals, and conveyor components
Aerospace: High-temperature seals, gaskets, and insulation
Electronics: Thermal interface materials, insulators, vibration dampeners
Automotive: Engine components, exhaust systems, sensors
Industrial: High-temperature equipment, ovens, furnaces
Custom Fabrication Services
• Precision die-cutting to any shape
• Waterjet cutting for complex profiles
• CNC machining for tight tolerances
• Adhesive backing and laminating
• Custom thickness and durometer options
• Specialty surface treatments
Die Cutting Available

Our advanced die-cutting capabilities allow us to create custom gaskets, seals, and components from your silicone sheets with precision accuracy and consistent quality.

• Steel rule dies for cost-effective production
• Precision machined dies for complex shapes
• Kiss cutting for adhesive-backed materials
• Minimum order quantities starting at 25 pieces
Contact Information
Technical Support
(412) 331-1400
Email
engineering@natl.com
Get Technical Help