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In fact, the differences between NBR and EPDM rubber rollers go far beyond surface-level specifications. They differ significantly across multiple dimensions, including molecular structure, chemical stability, resistance to media, hardness retention, compression set, and service life.

The English name for nitrile rubber is "Nitrile Butadiene Rubber," and its corresponding acronym is: NBR. Consequently, when industry professionals refer to "nitrile rubber rollers," "NBR rollers," or "NBR rubber rollers," all three terms effectively designate the exact same type of rubber roller material.

NBR rubber rollers are unsuitable for prolonged exposure to environments with intense UV radiation. From a molecular structural standpoint, the main chain of NBR rubber contains unsaturated double bonds; this specific structural feature renders the material highly sensitive to ultraviolet light.

Compared to materials such as natural rubber, EPDM, and silicone rubber, the most significant characteristic of NBR is that its molecular chain contains a large number of polar nitrile (–CN) groups. This structure is the fundamental reason for the exceptionally strong oil resistance of NBR rubber rollers.

Ordinary rubber, after prolonged contact with oily media, is prone to: • Swelling • Softening • Changes in viscosity • Surface cracking NBR Rubber Roller, due to the presence of acrylonitrile in its molecular structure, has a natural resistance to oils and can maintain stable dimensional and physical properties in oily environments.

Industrial NBR rubber rollers are unsuitable for outdoor use, primarily due to the following reasons: 1. Weak UV resistance 2. Insufficient ozone resistance 3. Poor weather resistance and prone to aging 4. Limited adaptability to temperature variations 5. Outdoor environments accelerate material degradation

Yes, nitrile rubber rollers have excellent water resistance. NBR material (nitrile rubber) has good watertightness and resistance to water vapor, allowing NBR rubber rollers to maintain structural stability and sustained performance in water environments at normal temperatures and even higher temperatures.

The biggest Pro of nitrile rubber is its excellent oil resistance, especially to the following oily media: • Mineral oil • Lubricating oil • Hydraulic oil • Fuel oil (diesel, gasoline) • Animal and vegetable oils • Most hydrocarbon solvents The Con is that they are not suitable for cold environments.

• If your equipment is in high-temperature, steam, outdoor, chemical, weather-sensitive, or ozone-laden environments → ✔ EPDM rubber rollers are better • If your equipment must be in prolonged contact with oils, greases, fuels, or high-friction conditions → ✔ NBR rubber rollers are better

Nitrile butadiene rubber is non-toxic, and NBR rubber rollers are also non-toxic products. Nitrile butadiene rubber (NBR) is an industrial synthetic rubber material copolymerized from acrylonitrile and butadiene, possessing excellent oil resistance, abrasion resistance, and mechanical stability.

NBR rollers can withstand temperatures of approximately 120°C in air and approximately 150°C in oil. This is determined by the combined characteristics of NBR's molecular structure, heat resistance, and oil resistance.