However, tensile power, elongation at split, and modulus of NR blends is just not significantly different from ENR. With regards to improve mass plus the improvements price of tensile toughness and hardness right after oil immersion, ENR blends which has oxirane group has far better properties instead of NR blends. https://natural-rubber-cup-lump94814.bloguetechno.com/the-2-minute-rule-for-technically-specified-rubber-66798890