Pete, the answer is yes, as long as the shielding(if any)is adequate for the particular location. The job a sub cable does is about the easiest in all of audio, as long as it doesn't pick up EMI. "RCA" strictly speaking refers to a plug, not a cable, so a strand of spaghetti with an RCA on each end might be called an "RCA cable"(but don't use it). A coaxial cable is often suggested for the sub cable because of its heavy shielding. The cable in your link should be fine, but I believe that the description is incorrect, since another source(Cables America)describes it in terms which indicate that it's a 75 ohm coaxial cable. Incidentally, for a dollar or so you can get a little RCA plug coupler with sockets on each end so that two 24' cables can be joined. Since a sub cable carries no power, just signal, no special fire precautions have to be taken when running it behind a wall.
