HNBR is a kind of elastomer obtained by special hydrogenation treatment of NBR, which not only retains the characteristics of NBR, but also makes up some shortcomings of NBR, and improves the comprehensive performance. The emergence of HNBR provides a better choice for various industries. However, due to its high price, it is not suitable for complete replacement of NBR. Therefore, what is the difference between the two and what scenario is suitable for HNBR has become everyone’s concern.