60 Durometer Natural Rubber Sheet
60 Durometer Natural Rubber Sheet is a medium-durometer polyisoprene elastomer sheeting compound offering a service temperature range of -70 to +180°F and elongation of 500% to 900%. Natural rubber delivers superior resilience, tensile strength, and excellent adhesion to fabrics and metals — performance characteristics that make it the material of choice for dynamic applications requiring energy absorption, abrasion resistance, and flex-crack resistance. At 60 Shore A, this grade is the mid-range hardness selection in the Natural Rubber Sheet line, suited for general industrial gasket, mount, and sealing applications requiring a well-rounded natural rubber profile.
Key Properties
- Hardness, Shore A: 60 ± 5 (ASTM D2240)
- Elongation: 500–900%
- Service Temperature Range: -70 to +180°F
- ASTM D2000 / SAE J200 Classification: AA
- ASTM D-1418 Designation: NR
- Recommended Shelf Life: 3 years
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Hardness, Shore A | 60 ± 5 | ASTM D2240 |
| Elongation, % | 500–900 | — |
| Temperature Range | -70 to +180°F | — |
| ASTM D2000 / SAE J200 Classification | AA | — |
| ASTM D-1418 Designation | NR | — |
| MIL-R-3065 / SAE J-14 / MIL-STD-417 Classification | RN | — |
| Recommended Shelf Life | 3 years | — |
Mechanical Properties
| Property | Rating |
| Compression Set | Excellent |
| Abrasion Resistance | Excellent |
| Impact Resistance | Excellent |
| Resilience (Cold) | Excellent |
| Resilience (Hot) | Excellent |
| Flex Cracking Resistance | Excellent |
| Tear Resistance | Very Good |
| Flame Resistance | Poor |
Environmental Properties
| Property | Rating |
| Ozone Resistance | Poor |
| Weather Resistance | Poor to Fair |
| Sunlight Resistance | Poor |
| Steam Resistance | Fair to Good |
| Water Resistance | Very Good |
| Oxidation Resistance | Good |
| Gas Permeability | Fair to Good |
| Radiation Resistance | Fair to Good |
Compliance
- ASTM D2000 / SAE J200 Classification AA — Compliant
- MIL-R-3065 / SAE J-14 / MIL-STD-417 Classification RN — Compliant
- Automotive gaskets and seals
- Industrial belts and vibration dampers
- Construction components and expansion joints
- Conveyor systems and machine mounts
- Abrasion-resistant liners and wear pads
Common industries: Automotive, General Industrial, Construction, Material Handling, OEM Equipment.
60 Durometer Natural Rubber Sheet is the mid-range hardness grade in the Natural Rubber Sheet line, offering 60 Shore A hardness that balances conformability with compression resistance for general industrial sealing and dynamic applications. The high elongation range of 500% to 900% and Excellent ratings for compression set, abrasion resistance, impact resistance, and resilience make this grade well suited for applications that require both mechanical performance and a degree of surface conformance under moderate compressive load.
The -70 to +180°F service temperature range and the natural rubber polymer’s outstanding cold and hot resilience support dynamic loading applications across a wide thermal range. Excellent adhesion to fabrics and metals makes this grade a strong choice for laminated and bonded constructions in machine mounts, conveyor components, and industrial belt applications. Note that natural rubber has poor resistance to ozone, UV, sunlight, petroleum-based oils, and flame — application environments should be evaluated accordingly.
What differentiates 60 Durometer Natural Rubber Sheet from the 40 Durometer, 50 Durometer, and 70 Durometer grades?
60 Durometer Natural Rubber Sheet is the mid-range grade in the Natural Rubber Sheet line at 60 Shore A, providing a balance between the greater conformability of the softer grades and the higher compression resistance of 70 Durometer Natural Rubber Sheet. It is the general-purpose hardness selection for standard industrial gasket and mount applications. 40 Durometer Natural Rubber Sheet and 50 Durometer Natural Rubber Sheet are preferred where lower durometer and maximum elongation are required, and 70 Durometer Natural Rubber Sheet is selected for high-load applications.
What makes natural rubber superior to synthetic elastomers for dynamic applications?
Natural rubber (polyisoprene) provides a combination of resilience, tensile strength, and elongation that synthetic elastomers typically cannot match at equivalent hardness. Its cold and hot resilience are both rated Excellent, meaning it recovers rapidly from dynamic deflection without significant heat buildup — a critical property for belts, mounts, and vibration isolators subjected to repeated loading cycles.
What is the service temperature range for 60 Durometer Natural Rubber Sheet?
The service temperature range is -70 to +180°F, as listed on the Technical Datasheet.
What are the limitations of natural rubber in outdoor or chemical environments?
Natural rubber has poor resistance to ozone, sunlight, UV exposure, and weathering, and is not recommended for contact with petroleum-based oils, fuels, gasoline, mineral oil, or most hydrocarbon solvents. Applications involving these exposures should consider a synthetic elastomer such as EPDM or nitrile. Salt water and sodium hydroxide are rated as having little or minor effect and are acceptable.
How should 60 Durometer Natural Rubber Sheet be specified?
Specify grade (60 Durometer Natural Rubber Sheet), thickness, applicable classification (ASTM D2000 AA or MIL-R-3065 RN as required), dimensional tolerances, and finished format.
