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美國National油封規格尺寸

美國National油封

NATIONAL油封系列是以外露骨架為主。外骨架油封相對于內骨架油封來言，剛性好、定位準確、同軸度高、導熱散熱好、加工精度高、要求膠與金屬之間有較高的粘合強度。 NATIONAL油封與其它品牌的最大不同之處，就是在鐵殼外圈的外徑上噴涂了紅色的REDICOAT專用涂漆，一方面可以區別其它品牌的顏色，另一方面，也是最主要的方面，鐵殼外徑噴涂紅漆可增加外徑的密封性能，可填充裝配孔腔表面之缺陷或刮痕，避免密封流體由外徑泄漏。這種REDICOAT涂漆，對孔腔面的加工光潔度就有所放松，允許有較大的表面粗糙度，同樣起到內骨架油封（外徑包有橡膠）的密封效果
national油封全型號供應

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national 1195	national 9470	national 350364	national 415458	national 450204
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national 1906	national 9540	national 350394	national 415461	national 450223
national 1949	national 9541N	national 350567	national415479N	national 450224
national 1952	national 9555S	national 350679	national 415480	national 450248
national 1959	national 9568	national 350823	national 415482	national 450260
national 1999	national456053N	national 350877	national 415483	national 450268
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national 2054	national 9600S	national 350936	national 415498	national 450273
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