Wiktionary
untearable
a. not tearable
Usage examples of "untearable".
It consisted of a double layer of virtually untearable plastic alloy colored a watery blue-green.
So they did not drown, they suffocated slowly behind the thick, unremovable, untearable óli masks, while they flailed desperately in the tank, and sank and rose and sank again, and the crowd wailed in mourning, and the drums and instruments continued their god-shouting cacophony.
Father has some untearable transparent envelopes, and I shall ask him for two of them.
If her clothes hadn't been made of untearable, uncuttable nanostuff, she would have been stripped naked within a block.