HNBR is a highly saturated specialty elastomer that offers excellent resistance to heat aging, ozone, radiation, and chemical media, making it suitable for use in harsh environments. As a high-performance specialty rubber, HNBR excels in applications where many traditional rubber materials fall short.

As part of Dawn Group, Dawn Special Elastomer Materials Co., Ltd. focuses on producing high-quality HNBR, offering a variety of grades with different performance characteristics to meet the stringent requirements of industries worldwide.

Key Properties of HNBR in Harsh Environments

• Resistance to Thermal Aging and Ozone

One of the most notable features of HNBR is its excellent heat aging resistance, allowing it to perform reliably under high-temperature conditions. HNBR is also highly resistant to ozone and oxidative degradation, making it ideal for outdoor applications. It can withstand prolonged exposure to UV rays and harsh weather conditions, effectively extending the product's service life.

• Chemical Resistance

HNBR exhibits excellent chemical resistance and is capable of withstanding various chemical substances, including oils, fuels, acids, and alkalis. This makes it especially crucial for industries such as automotive and oil and gas, where materials are frequently exposed to harsh chemical environments. The chemical resistance of HNBR ensures the integrity of seals, gaskets, and O-rings, maintaining their performance and durability in these demanding conditions.

• Excellent Low-Temperature Flexibility

HNBR retains excellent flexibility in low-temperature environments, making it suitable for applications in cold or extremely low temperatures. Unlike other rubber materials, HNBR does not become brittle at low temperatures. It can perform stably in freezing conditions, maintaining its sealing function and ensuring reliability even in harsh cold environments.

• Abrasion and Wear Resistance

HNBR boasts outstanding wear resistance, making it an ideal choice for mechanical components subjected to continuous friction or contact. This characteristic ensures that parts such as seals, gaskets, and belts maintain long-term reliability even under extreme physical conditions, extending their service life and reducing maintenance needs.

Applications Benefiting from HNBR’s Durability

Automotive Industry

In the automotive industry, HNBR is widely used in timing belts, seals, fuel system components, gaskets, and other parts of the engine. Its excellent resistance to high temperatures, oils, and mechanical pressure ensures the long-term stability of automotive components. The chemical resistance of HNBR in fuel and oil systems enables it to maintain its sealing function consistently in these demanding environments.

Oil & Gas Industry

The oil and gas industry is a key application field for HNBR, particularly in drilling equipment, wellhead equipment, seals, and gaskets. HNBR's resistance to high temperatures, oils, chemical corrosion, and wear is especially critical in high-pressure environments, where it ensures that key components operate effectively under harsh conditions.

Aerospace & Defense

HNBR, due to its stability in high-pressure and high-temperature environments, is ideal for components such as O-rings, seals, and gaskets. It can operate reliably over long periods under extreme conditions, ensuring the performance and integrity of critical systems.

Dawn HNBR

1. International Advanced Level
2. 3000 T/yr Production Capacity
3. Adopt self-developed core catalysts
4. Own Completely Independent Intellectual Property Rights

We have 12 HNBR grades to meet the needs of different customers.

Contact us to request HNBR samples!