Two-component polyurethane silicone rubber polysulfide rubber chloroprene rubber and epoxy resin sealant of this type are generally completed at room temperature vulcanization.

• 双组分的聚氨酯、硅橡胶、聚硫橡胶、氯丁橡胶和环氧树脂密封胶都属于这一类，一般在室温条件下完成硫化。