1）、重量轻，安全简便，密封性能好，施工成本低
2）、安全可靠的环刚度
3）、抗非正常突发载荷能力强
4）、无毒性
5）、内表面光滑
6）、抗腐蚀，耐磨损，寿命长
7）、柔韧性，无泄漏、抗冲击
8）、抗紫外线
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