The Permatex is silly expensive, ($6 for 1.5oz?) the spout should be smaller, and it should come packaged so the spout remains with the tube after the better-sealing cap goes back on.
But it goes far, flows as it is supposed to, and it adheres and stays clear.
Better living chemically. I tried another fine commercial product, but it wouldn't adhere to sil nylon and visibly scabbed. Another HF member with more attention to craft and detail than I have didn't succeed with home-brew on a tarp we have in common. So, credit Permatex chemical engineers for knowing much about their core, adhesion and freedom from it. I suppose McNett knows about their specialty industry needs, too. Be sure you get the right product from them, not the one for urethane-sealed tarps and tents.