As the nail enters the tire and reaches the inner liner, DuraSeal surrounds the puncture and seals off the leak.
According to Trucking Info, DuraSeal is a yellow, gel-like rubber compound that instantly seals punctures up to 1/4 inch in diameter, in the tread area of the tire. (It does not seal sidewall punctures.)
“if the nail is popped out, DuraSeal can instantly fill the hole and keep air from escaping,” said Tim Miller, Goodyear marketing and communications manager.
*The tire used to showcase DuraSeal’s capabilities was not bearing the weight of a load.