Natural 40 HG is a premium grade highly flexible, compressible and resilient 40 Duro natural rubber sheet.
FEATURES
Natural 40 HG Rubber is a high-grade, soft natural rubber compound developed for construction and infrastructure applications where a highly flexible, compressible material is required. With a hardness of 40 Duro, it provides excellent resilience and elasticity, allowing it to deform under load and achieve full contact between uneven or imperfect bearing surfaces.
This premium compound delivers outstanding flexibility and recovery, enabling it to absorb movement, vibration, and impact while maintaining reliable load distribution across concrete and steel interfaces. Its softer composition allows for greater compression and deflection, making it ideal for sealing, isolation, and cushioning applications where surface variations or gaps need to be accommodated without compromising structural performance.
Natural 40 HG Rubber offers excellent tensile strength, tear resistance, and durability for its softness, ensuring dependable performance and long service life under continuous loading conditions. The material’s elasticity also provides effective vibration and noise dampening, improving comfort and reducing stress in building and civil structures.
It exhibits good weathering and UV resistance, allowing for reliable performance in both indoor and outdoor environments. Even when exposed to sunlight, moisture, and temperature changes, the rubber maintains its flexibility and physical properties.
Natural 40 HG Rubber can also be supplied with a CN bonding layer, making it fully compatible with Reglin’s range of primer and adhesive systems for secure bonding to prepared steel or concrete substrates. Supplied in sheets, pads, or precision-cut strips, it is an adaptable, high-quality rubber solution for applications that demand compressibility, flexibility, and reliable sealing under load.
APPLICATIONS
Natural 40 HG Rubber is used in construction, building, and civil engineering applications that require a soft, compressible, and flexible bearing material.
Its 40 Duro hardness allows it to deform under load and conform to uneven or irregular surfaces, ensuring full contact and even pressure distribution between structural elements.
This high-elasticity compound is ideal for sealing, isolation, and cushioning applications, where it compresses to accommodate movement, absorb vibration, and minimise noise. It provides an effective interface between concrete, steel, and precast components, reducing stress concentrations and protecting against damage caused by movement or load variation.
Natural 40 HG Rubber is suitable for:
- Flexible bearing and isolation pads for steel structures, precast concrete panels, and walls
- Sealing and cushioning layers between structural steel and concrete supports
- Flexible joints and expansion interfaces requiring higher deflection capability
- Vibration and noise isolation pads beneath foundations and machinery bases
- Contact and alignment layers where uneven or defective bearing surfaces are present
Natural 40 HG Rubber provides a versatile and resilient sealing and bearing material for engineers and fabricators who need a soft, compressible rubber that ensures full contact, vibration control, and reliable sealing under load in demanding construction environments.
TECHNICAL INFORMATION
| Polymer | NR | |
| Colour | Black | |
| Specific Gravity | 1.12 | ASTM D297 |
| Hardness | 40° ± 5° Shore A | ASTM D2240 |
| Tensile Strength | 18 MPa (min) | ASTM D412 |
| Elongation @ Break | 550% (min) | ASTM D412 |
| Abrasion | 100mm³ (max) @5N | ASTM D5963 |
| Temperature Range | -20°C to +70°C | |
| Tear Strength | 60 N/mm (min) | ASTM D624 |
AVAILABLE SIZES
Natural 40 HG Rubber Sheet is stocked in rolls and available in a range of standard thicknesses including 3mm, 6mm, 9mm, 12mm, 16mm, 19mm and 25mm.
Using Reglin’s in-house cutting facilities, rolls can be converted into custom strips, isolation pads, sealing gaskets, and precision-cut components to meet specific project requirements. The material’s compressibility and flexibility make it particularly suitable for load-bearing interfaces, flexible joints, and sealing layers in structural assemblies.
Natural 40 HG Rubber can also be supplied with an optional CN bonding layer for applications requiring adhesion to steel or concrete surfaces. Reglin’s local stock and fast cutting turnaround enable reliable delivery of custom-cut rubber components that meet the performance requirements of the Australian construction industry.
