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Product Description
With decades of field-tested performance, EPDM sheet rubber has earned its place as a trusted benchmark for reliability. More than a generic elastomer, it is a professional-grade blend of EPDM and SBR relied upon by engineers and contractors worldwide for consistent, high-quality results. Widely used across industrial and commercial applications, it has built a strong reputation for weather resistance and dependable flexibility even in demanding environments. When project specifications demand a material with a legacy of resilience, this all-purpose rubber is the trusted standard of excellence.
Molecular-Level Resistance to UV, Ozone, and Oxidation: The durability of EPDM sheet rubber stems from its chemically stable, saturated polymer backbone providing a clear advantage over many unsaturated elastomers. Materials such as SBR, nitrile, and neoprene contain double bonds that are more vulnerable to ozone cracking and oxidation, while EPDM’s molecular structure remains stable under UV exposure and chemical stress.
As a result, it degrades more slowly in outdoor environments and maintains a more consistent compression set over time. For industrial and construction applications, choosing EPDM is a practical way to reduce maintenance demands and support long-term mechanical reliability.
Certified Quality for Demanding Applications: EPDM 70A rubber is manufactured to precise standards, delivering a professional-grade solution for industrial use. With a nominal Shore A hardness of 70, it provides a balanced combination of durability and flexibility. It is firm enough to resist abrasion while remaining pliable enough to create effective seals. Its performance is further reinforced by a 300% elongation capacity, allowing the material to stretch under pressure and return to its original shape without losing integrity. For applications that demand reliable manufacturing quality and proven performance, this material offers a dependable solution for long-term industrial use.
Availability & Customization: Backed by consistent supply and manufacturing expertise, EPDM 70A is stocked in widely used thicknesses, including 1/32″, 1/16″, 3/32″, 1/8″, 3/16″, 1/4″, 3/8″, 1/2″, 3/4″, and 1″. For specialized applications, custom sizes can also be produced to meet project requirements. This level of availability ensures that customers can confidently source the material they need without compromise.
Additional Benefits:
- 70A Industrial Hardness: Provides the ideal balance of firm abrasion resistance and flexible sealing
- Weather & UV Immunity: Saturated polymer structure prevents cracking and oxidation in harsh environments
- Industrial Standard: The go-to benchmark for consistent performance in high-stakes commercial and industrial settings
- Versatile Sizing: Available in ten thicknesses from 1/32″ to 1″ with full custom sizing options
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Product Specifications
| Description: | Ethylene Propylene Diene Monomer (EPDM) and SBR blended sheet is a black colored sheet rubber which provides very good resistance to weathering, ozone and UV exposure. |
| Compound: | 10% Ethylene Propylene Diene Monomer (EPDM) Base, SBR |
| Color: | Black |
| Weight: | Approximate weight per square foot: 1/8″ weighs 1-1/4 lbs. |
| Durometer: | 70 Shore A, +/- 5 |
| Temperature Range: | -40 F to 212 F |
| Minimum Tensile: | 725 PSI or 5 MPA |
| Finish: | Smooth |
| Minimum Elongation: | 300% |
| Gauges: | 1/32”, 1/16″, 3/32”, 1/8″, 3/16″, 1/4″, 3/8″, 1/2″, 3/4″ & 1” |
| Widths: | 36″ (custom widths up to 78” are available upon request) |
| Roll Length: | 25′ or 50′ depending on thickness. |
| PSA: | Pressure sensitive adhesive can be applied to this product upon request. |
| Chemical Resistance: | Good resistance to UV rays and ozone. Good resistance to Anti-freeze, Synthetic Detergents, Acetone, Boric acid, Ethanol, Formaldehyde, Mercury, Potassium Sulfate, Silver Nitrate, Steam (up to 212 Fahrenheit), Saccharin. For EPDM Blend’s compatibility with your specific medium please consult a Rubber-Cal representative. |
| Applications: | Provides outstanding resistance to weathering, ozone and UV exposure. Gasket, bumper and general exterior applications. |
| Flexibility: | This hard durometer (65-75) sheet rubber offers excellent an excellent firm surface while retaining some elasticity. |
| Custom Cuts | In addition to hand fabrication, this product can be fabricated using laser, die, and water-jet cut. Please submit your drawings for a price quote. |
| Availability: | Popular gauges are generally in stock. |
See EPDM – Commercial Grade – 70A in Action
Steam 212°F – EPDM – Commercial Grade – 60A
Flexibility – EPDM – Commercial Grade – 60A
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