Double seals: Material code for the secondary seal is directly followed by the product seal face codes.
注：双端面机械密封的型号表示方法为：在产品型号规格的后面书写两组材料代号，用横线相连。
This paper illustrates the structure and principle of double seals, analyzes the problems found in water filled test, and brings forward the improvement method.
文章介绍了双重密封的结构和原理，通过充水试验检验双重密封的各项性能，对出现的问题进行了分析，并提出了改进方法。
The design features of HOWDEN VNT type stationary sealed air preheater, such as stationary seal system, double seals, driven system and bearings etc. are described.
介绍HOWDENVNT型固定密封空气预热器的设计特点，如固定式密封系统、双重密封、驱动系统和轴承等。
The general prediction of leakage rate is presented. Influencing factors are analyzed. Countermeasures such as double seals, new structure of static seal, automatic control system are introduced.
推导空气预热器漏风的一般性计算公式，分析影响漏风的因素，提出了采用双密封技术，新结构静密封，安装漏风自动控制系统等降低漏风的对策。
Clear permeate is required if horizontal pumps are used, since pigments from the paint will damage double mechanical seals.
如果使用卧式泵，也需要清洁的渗透液，否则漆液中的颜料会损坏机械。
DAC series wheel bearing is a double row angular contact ball bearing incorporating an integral outer ring and two separable inner rings which is available with seals or without seals.
DAC系列轮毂轴承是由一个整体外圈和两个可分离内圈组成的双列角接触球轴承，有带密封圈和不带密封圈两种结构。
The axle seals adopt single (double) end, corrugated pipe, etc forms mechanical seals, also may adopt soft packing seals, and can unit to all kinds of conditions requirement of seal.
轴封采用单(双)端面、波纹管等形式的机械密封，也可采用软填料密封，能适应各种条件下的密封要求。
The axle seals adopt single (double) end, corrugated pipe, etc forms mechanical seals, also may adopt soft packing seals, and can unit to all kinds of conditions requirement of seal.
轴封采用单(双)端面、波纹管等形式的机械密封，也可采用软填料密封，能适应各种条件下的密封要求。
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