这种手套由弹性体制成，可以很好地贴合手型。

These gloves are made of ___elastomer material that fits the hands perfectly.

这种弹性体材料常用于制作密封圈，因为它耐高温且不易变形。

This ___elastomer is often used to make sealing rings because it resists high temperatures and doesn't deform easily.