effective seal वाक्य

When this happened, the trap evidently formed an effective seal with the head of the larva as it could still excrete water and become flattened, but it would nevertheless die within about ten days " evidently due to overfeeding ".
This is due to the fact that the chin piece prevents the wearer from opening their mouth and dislodging the gag, and the lacing at the back of the corset holds the gag tightly against the mouth, making a very effective seal.