采用浇注型聚氨酯材料，设计了一种管道用胀环试样试验台主密封圈。
Manufactured by casting polyurethane, main seal ring used in expansion ring testing device for pipeline was designed.
主要的类型有浇注型聚氨酯弹性体、混炼型聚氨酯弹性体和热塑性聚氨酯弹性体。
The main types are cast polyurethane elastomer, millable polyurethane elastomer and thermoplastic polyurethane elastomer.
找出了发泡剂为氟里昂- 11的聚醚基浇注型聚氨酯硬泡沫塑料上述弹性性质的经验公式。
The experience formulas for the above-mentioned elastic properties of a moulded PUR foam of polyether base blown by F-11 are presented here.
其特征将离心泵分解成由泵盖及整体蜗壳组合结构，并在过流部位衬里一层浇注型聚氨酯弹性体。
The centrifugal pump is one combined structure of pump cover and integral volute and has one cast polyurethane elastomer lining in the fluid passing part.
其特征将离心泵分解成由泵盖及整体蜗壳组合结构，并在过流部位衬里一层浇注型聚氨酯弹性体。
The centrifugal pump is one combined structure of pump cover and integral volute and has one cast polyurethane elastomer lining in the fluid passing part.
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