[中英版]密封材料的性能特点主应用场所
2019-2-23 8:27:29 点击率：
| 名称 | 代号 | 特点 | 适用温度 | 应用场所 | |
| name | code | characteristics | temperature | application | |
| 丁腈胶 nitrile - butadiene rubber |
nbr | 耐磨性、抗透气性和耐油性好，适用于矿物液压油、润滑脂、硅油、阻燃液和80℃的热水中。不适用于极性溶剂、刹车液。耐臭氧性、耐侯性一般，但因一般密封件是安装于油缸内而不会受此影响。 good mechanical technological parameters,e.g. high abrasion resistance, low gas permeability and good resistance to mineral oil based lubricating oils and greases, hydraulic oils,highlynon-flammable hydraulic fluids hfa, hfb, hfc, silicone oils and greases, water up to approx. 80°c.nbr is generally not resistant to polar solvents, glycol-based brake fluids and highly non-flammable hydraulic fluids hfd. it has a low resistance to ozone, weathering and ageing. in most hydraulic applications this has no effect because the hydraulicseals are installed internally in the hydraulic components. |
-30/ 120℃ | 因其综合机械性能好、耐油性好，是最为广 泛使用的液压密封材料。 nbr is frequently used in the hydraulic field due to its good mechanical characteristics and resistance to mineral oil based lubricating oils and greases. |
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| 氟橡胶 fluoroel astomer |
fkm | 耐高温和耐介质性能好，即使在高温情况下，依然能保持好的耐 介质性和抗压缩变形性。 fkm is a fluorocarbon elastomer with high thermal and chemical resistance.its broad spectrum of resistance and relatively good compression set, even at high temperatures. |
-20/ 200℃ | 阻燃、抗透气性好。应用于高温、抗臭氧和 耐侯性要求高的场合。 fkm is known especially for its non- flammability, low gas permeability and excellent resistance to ozone, weathering and aging. |
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| 聚氨酯 polyurethane |
pu | 机械强度高，耐磨性、抗挤出性、抗高压性、抗撕性好，扯断强 度高。弹性和抗臭氧性不错 pu materials display higher mechanical strength,high abrasion, wear and extrusion resistance, high pressure load capacity,as well as a high tear and elongation at break resistance. also have good flexibility and very good ageing and ozone resistance. |
-45 110℃ | 广泛应用于矿物液压油、硅油、hfa/hfb型 阻燃液，某些牌号适用于高达50℃的热水中。 pu materials are suitable for application in mineral oils and greases,hydraulic oils, silicone oils and greases, highly non-flammable hydraulic fluids hfa and hfb and water up to 50°. |
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| 夹布橡胶 fabric reinforcement rubber |
fab | 耐磨性、抗挤出性和耐低温性好，制品尺寸稳定性、抗吸湿性好 have high wear resistance, good low temperature resistance and high pressure load and extrusion resistance. in addition rubber fabric hydraulic seals are inherently very dimensionally stable and have a low moisture expansion tendency in hydraulic media. |
-30/ 100℃ | 特别适合于重载环境。 particularly well suited for rough application conditions, such as in mobile hydraulics or other heavy duty applications. |
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| 硅胶 silicone rubber |
pmq 或(or) vmq |
耐热、介电性能好，低温弹性好，耐侯性、抗臭氧性和抗uv性能 好。一般不适用于矿物油。 vmqshows excellent heat resistance, cold flexibility,dielectric properties and especially good resistance to weather, ozone and uv rays.not suitable for oil based fluid. |
-60/ 230℃ | 广泛适用于食品和低温环境。 foodstuff and cryogenic engineering. |
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| 聚丙烯酸酯橡胶 polyacrylate rubber |
acm | 抗臭氧性、耐侯性和耐热空气性极佳，机械强度一般，弹性和耐 低温性不好。 acm shows excellent resistance to ozone, weathering and hot air, although it shows only a medium physical strength,low elasticity and a relatively limited low temperature capability. |
-20/ 150℃ | 主要适用于高温环境下的含极压添加剂的车 用润滑脂。 acm materials are mainly used in automotive applications which require special resistance to lubricants containing many additives (incl. sulfur) at high temperatures. |
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| 三元乙丙橡胶 ethylene propylene diene rubber |
epdm 或(or) epm |
耐热性、耐臭氧性和耐侯性好，弹性、低温性能和绝缘性能不错。 epdm shows good heat, ozone and aging resistance. in addition they also exhibit high levels of elasticity, good low temperature behavior as well as good insulating properties |
-50/ 150℃ | 常用于刹车液和热水环境中。 epdm can often be found in applications with brake fluids (based on glycol) and hot water. |
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| 氢化丁腈橡胶 hydrogenated nitrile butadiene rubber |
hnbr | 综合机械性能好。在矿物油中其使用温度为-30--140℃，短时间可 达160℃。某些牌号其耐低温可达-40℃。 hnbr shows good mechanical properties.the operating temperature of hnbr ranges between -30°c and 140°c(for a short period of time up to 160°c) in contact with mineral oils.special types can be used down to -40°c. |
-30/ 140℃ | 适用于高温环境的矿物油。 mainly use in mineral oil at high temperature. |
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| 氯丁橡胶 chloroprene rubber |
cr | 耐臭氧性、耐侯性、耐化学介质性好，阻燃性、低温性能和机械强度不错。 in general the cr materials show relatively good resistances to ozone, weathering, chemicals and aging.also they show good nonflammability, good mechanical properties and cold flexibility. |
-30～ 100℃ | 常用于制冷行业和户外。 cr materials are found in sealing applications such as refrigerants, for outdoor applications. |
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| 聚四氟乙烯 polytetrafluor oethylene |
ptfe | 纯ptfe能耐几乎所有的液压介质、溶剂和各种化学介质,具有极低的摩擦系数，无爬行现象。抗臭氧性、耐侯性极佳，具阻燃性。为改善其抗冷流性，通常在制造密封件时会加入填充材料。 ptfe display almost universal chemical resistance,an extremely low friction value which results in very good sliding characteristics, no stick-slip effect,particular rigidity and almost unlimited ozone, weathering and ageing resistance. ptfe is impervious to almost all known hydraulic media, lubricants,chemicals and solvents.ptfe is non-flammable and so does not constitute an additional hazard in case of fire.pure ptfe is not totally without disadvantages as it has a tendency to cold flow or crawl under pressure load.these weaknesses are counteracted by the use of seal compounds mixed with fillers. |
-55～ 260℃ | 纯ptfe特别适合于食品、饮料和制药行业。 填充ptfe几乎适用于所有工况，一般使用弹 性体或弹簧做弹性件与之配合使用，广泛应 用于液压、压缩机、化工等各行各业。 pure ptfe is particularly suitable for food and beverage applications, pharmaceuticals and medical application areas. ptfe is not or only slightly elastic. for this reason, ptfe seal elements are activated by elastic energising elements in the form of o-rings or stainless steel springs. compounds filled with bronze for example, give ptfe the ability to adapt to most application conditions. |
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| 尼龙 nylon |
pa | 抗磨性能好。有吸湿后体积膨胀的特性。 pa has a good wear resistance.water absorption and resulting change in volume can be catered for by increasing housing tolerances. |
-40～ 120℃ | 常用于制作大规格的耐磨环和挡圈。 pa is a high-molecular polyamide from which even large elements can be produced economically,is used for large bearings and support rings. |
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| 聚甲醛 polyoxymethyl ene |
pom | 滑动性能好，尺寸稳定性、抗压性和抗吸水性好。 excellent sliding characteristics, particularly in the dry-running range of the bearing element.the material is tough and maintains good stability of shape at different temperatures. its chemical structure also gives it high resistance to various fluids with low water absorbtion. |
-40～ 140℃ | 特别适合制作导向元件和挡圈。 particularly suitable for the functions which guide rings and back-up rings are required to fulfil. |
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| 超高分子量聚乙烯 utra high molecular weight polyethylene |
uh -pe |
耐磨性能极佳。 excellent wear and abrasion resistance. |
-160~ 100℃ | 常用于水和低温工况。 best in aqueous solutions and cryogenic temperatures. |
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| 酚醛夹布phenolic resin with fabric reinforcement |
c380或 c932 |
由纤维和树脂组成，产品寿命长，摩擦阻力小，回弹性、抗压性 、抗吸水性好。 with the selection of the optimal material combinations (fabric/resin), a long product life, high restoring force, low friction and very high contact pressure (load capacity) can be achieved. no moisture expansion in water; or measurable absorption of water. |
-60… 120℃ | 用于高载荷、有剪切力的场合，如重载耐磨 环。 selected for application areas in hydraulics with high loads and shear forces,heavry duty wear ring for example. |
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