全系列均采用三偏心硬密封结构。
The full series are structure of tri-eccentric and hard sealing.
密封形式有软密封和硬密封两种。
其密封结构可以分软密封、硬密封结构。
The sealing structure can be divided into soft-seal and hard seal structure.
软密封型一般采用橡胶环密封，硬密封型通常采用金属环密封。
Generally use the soft rubber type sealing ring seal, hard seal ring-type metal seal used.
采用一体铜制密封件，形成有效软硬密封效果，使上部密封性能更强。
Adopt union brass sealing piece, have soft hard sealed effect, make better top sealing performance.
采用一体铜制密封件，形成有效软硬密封效果，使上部密封性能更强。
Adopt union brass sealing piece, have soft hard sealed effect, make better top sealing performance.
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