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1、丁睛胶O型密封圈丁晴橡胶(NBR)：此种材料最高温可达130度，硬度有50-90度的都有，规格齐全，它具有良好的机械性能，耐矿物基润滑油和油脂。(NitrileRubber)由丙烯睛与丁二烯共聚合而成，丙烯睛含量由18%~50%，丙烯睛含量愈高，对石化油品碳氢燃料油之抵抗性愈好，但低温性能则变差，一般使用温度范围为-25~100℃。丁睛胶为目前油封及O型圈最常用之橡胶之一。优点：具良好的抗油、抗水、抗溶剂及抗高压油的特性。具良好的压缩歪，抗磨及伸长力。缺点：不适合用于极性溶剂之中，例如酮类、臭氧、
2、硝基烃，MEK和。-用于制作燃油箱、润滑油箱以及在石油系液压油、汽油、水、硅润滑脂、硅油、二酯系润滑油、甘醇系液压油等流体介质中使用的橡胶零件，特别是密封零件。可说是目前用途最广、成本最低的橡胶密封件。theCommunistPartyofChina,andadeepunderstandingoftheparty'snature,purpose,guidingprinciples,goals,organization,goodstyle,deeplyunderstandtheconditions,
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7、esspeech,mainunderstandmasterfollowingaspectscontent:(1)idealfaiththeCommunistPartyofChina,andadeepunderstandingoftheparty'snature,purpose,guidingprinciples,goals,organization,goodstyle,deeplyunderstandtheconditions,rightsandobligationsofmembers,codeo
8、fconduct,bearinginmindthatoath,clearMembersofthestandardsandconditions,enhancerespect,abidebytheConstitution,maintainingthepartyConstitutionconsciousnessofthepartyConstitution.Readthroughthefamiliarwiththecodeofself-disciplineoftheCPC,theCPCdi
