超薄结构，双重密封。
It is of built-in type, double seal face, multi-spring, unbalanced type and drive sleeve transmission.
内装式、双端面、多弹簧、非平衡型、传动套传动。
Double mechanical seal, No leakage, Can bear higher working pressure.
采用双机械密封，安全无泄漏，可承受更高的工作压力。
Dust cover and seal with double protection, isolated pollution.
采用防尘盖和密封圈双重保护，隔绝污染。
Double safety sealed, with outer shrink wrap film and inner bottle freshness seal.
双安全密封，收缩包装膜外及内瓶新鲜印章。
Seal using novel double-end mechanical seal structure.
轴封采用新颖的双端面机械密封结构形式。
Seal using novel double-end mechanical seal structure.
轴封采用新颖的双端面机械密封结构形式。
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