Packing and gaskets to be non-asbestos. 填料和垫圈是不含石棉的材料。
Study on Non-asbestos Frictional Material of Composite Wear-resisting Fiber 耐磨型复合纤维在无石棉摩擦材料中的研究
Application of non-asbestos friction drum brake linings at motorcycle existing 无石棉摩擦衬片在现行摩托车鼓式制动器上的应用研究
Study on the Calender and the Key Technology of the Calendering Process for Sealing Composite Reinforced with Non-asbestos Fiber 非石棉(NA)密封复合材料压延机的研制及其压延工艺关键技术
Acid-alkali-poor, this is the one reason non-asbestos prescription dominant. 耐酸耐碱较差,这也是无金属配方占主流的一个原因。