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NBR、硅橡胶PMQ/VMQ、乙丙橡胶EPDM、氟橡胶FKM是 橡胶密封圈 中常见的材质，那么他们各自所耐的介质了什么呢？ Rubber is subdivided into many materials. Among them, nitrile rubber NBR, silicone rubber PMQ / VMQ, ethylene-propylene rubber EPDM, and fluoro rubber FKM are common materials in rubber seals , so what are their respective media resistance? Next Haisheng Rubber will introduce to you.
1. Nitrile rubber NBR: suitable for petroleum products, air with oil vapor, vegetable oil and mineral oil, but not for phosphate ester series hydraulic oil and gear oil containing extreme pressure additives. The operating temperature is -40-120 ° C.
硅橡胶密封圈 ：适用于饮用水、热水、无油空气寄高温蒸汽等，但不适用于石油类介质，使用温度为 -60-230℃。 2. PMQ / VMQ silicone rubber sealing ring : suitable for drinking water, hot water, oil-free air and high-temperature steam, but not for petroleum media, the use temperature is -60-230 ℃.
3. EPDM ethylene-propylene rubber seal ring: suitable for hot water, dilute acid, oil-free air and a variety of chemicals, good weather resistance, but not suitable for petroleum media, the use temperature is -50-150 ℃
4. FKM fluorine rubber seal ring: suitable for a variety of hydrogenated acid, petroleum, halogenated hafnium, lubricating oil, hydraulic fluid, organic liquid and hydrocarbon-containing air, the use temperature is -20-150 ℃.
The above is the introduction of common rubber seal ring materials. The performance of each material is different. You need to choose the right material according to the working conditions in order to use good products.
If you have any other questions, welcome to consult on Haisheng Rubber's official website
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