美国National油封规格尺寸_密封件_五金工具_产品云库

美国National油封规格尺寸

美国National油封

NATIONAL油封系列是以外露骨架为主。外骨架油封相对于内骨架油封来言，刚性好、定位准确、同轴度高、导热散热好、加工精度高、要求胶与金属之间有较高的粘合强度。 NATIONAL油封与其它品牌的最大不同之处，就是在铁壳外圈的外径上喷涂了红色的REDICOAT专用涂漆，一方面可以区别其它品牌的颜色，另一方面，也是最主要的方面，铁壳外径喷涂红漆可增加外径的密封性能，可填充装配孔腔表面之缺陷或刮痕，避免密封流体由外径泄漏。这种REDICOAT涂漆，对孔腔面的加工光洁度就有所放松，允许有较大的表面粗糙度，同样起到内骨架油封（外径包有橡胶）的密封效果
national油封全型号供应

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