The sealing ring by a similar to the rubber or plastic non-metallic materials.
该密封圈由一种类似于橡胶或塑料的非金属材料制成。
The plastic oil-sealing cover has deformed.
塑料油封盖变形了。
The invention relates to a concrete joint plastic sealing material.
本发明涉及一种混凝土接缝塑性止水材料。
The invention relates to a concrete joint plastic sealing material.
本发明涉及一种混凝土接缝塑性止水材料。
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