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{zd0}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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本公司位于江蘇省昆山市, 以代理銷售及生產為一體。專業從事國產、進口標準骨架油封、密封圈、O型圈 、組合墊、防塵圈、油封蓋、KDAS、格萊圈、斯特封、四氟制品、橡膠條等。產品主要應用在工程機械行業、產業機械、航空船舶機械、石油化工機械、注塑機行業、冶金行業、壓力機行業、工程機械油缸廠、汽車機車農機行業、冶金油缸廠及專用機械等各種不同行業。主營品牌:KSK、 YEI、 SOG 、NAK 、NOK。型式: TC 、TB、TA、VB、SB、SC、GA 、UHS、DHS、UN、TCN、TCV、DKB、J型、U型、Y型、包覆o型圈，雙層四氟包氟o型圈，包氟O型圈,全包覆O型圈 四氟O型圈 四氟包氟O型圈,硅膠O型圈， 氟膠O型圈，NBRO型圈，三元乙丙O型圈，泛塞封等。
材質: 丁晴膠（NBR）、氟橡膠（FKM）、硅膠（SI） 、聚四氟乙烯（PTFE）。其中氟橡膠油封特別適合在：強烈酸、堿、腐蝕化學劑及高轉速環境中使用；其耐溫為30℃-280℃ 、耐老化達十年之久。我們恪守“質量保證，顧客至上，營銷全球，永續經營”的經營理念，遵循“質量{dy}，信譽{dy}，服務{yl}。規格齊全，非標訂做，現貨供應。真誠期待你的來電，并有幸與貴公司成為合作伙伴！