Widely known for its physical strength and retention of properties after long-term exposure to heat, oil, and chemicals.
Depending on filler selection and loading, HNBR compounds typically have tensile strengths of 20 – 31 Mpa when measured at 23 °C.
Compounding techniques allow for HNBR to be used over a broad temperature range, -40 °C to 150 °C, and 160 °C in oil, with minimal degradation over long periods of time.
For low-temperature performance, low ACN grades should be used; high-temperature performance can be obtained by using highly saturated HNBR grades with white fillers.
As a group, HNBR elastomers have excellent resistance to common automotive fluids (e.g., engine oil, coolant, fuel, etc.) and many industrial chemicals.
Physical & Mechanical Properties
|Durometer or Hardness Range||30 – 95 Shore A|
|Tensile Strength Range||1,500 – 3,500 PSI|
|Elongation (Range %)||90 % – 550 %|
|Abrasion Resistance||Good to Excellent|
|Adhesion to Metal||Excellent|
|Adhesion to Rigid Materials||Good to Excellent|
|Compression Set||Good to Excellent|
|Flex Cracking Resistance||Fair to Good|
|Resilience / Rebound||Good|
|Tear Resistance||Good to Excellent|
|Vibration Dampening||Fair to Good|