Unless your using a shit organic gasket I dont see why it would fail, unless you have old hardware and the nuts are loosening up and causing the turbo to loosen up off the manifold
(Which happened to me once, then I put new hardware in, reused my multilayer t2 gasket and havent had a problem since)
You can see in the picture, the multilayer S15 turbine gasket and exhaust manifold gaskets that are bundled with the tomei expreme manifold kit, I think if you call up enjuku they have the part numbers written down for just the gaskets and you can order them thru enjuku.
