Hardware store vinyl ok for mashing

I built another mash tun but the hardware store didn't have the nipple size that matches my tubing. I can easily buy the right sized vinyl tubing there, but I'm curious if it will be acceptable for lautering mash temp wort. My HBS says the vinyl I bought from them is fine, and I assume the HW store tubing are basically the same. The HW store dudes don't know anything about its temp range. Anyone know if it's safe?

I have used it in a pinch and I am still here to tell you about it. I suppose it depends how particular you are.