On Sun, 20 Jan 2008 09:54:37 -0800 (PST), lens
wrote:

My idea to fix this is to get
a 3 ft "half round" of ss tubing, maybe with a 1/8" or 3/16" radius
(1/4" to 3/8 diam tube before slitting) and fill the inside of the
half-round with silicone and glue it down to the sink deck just to
make a little "speed bump" to stop the water.

Not the exact dimensions you asked for, but it was the second Google
hit for:
"stainless steel" "rub rail"

http://www.tacomarine.com/cat--Stain...olid_back.html

A deeper search may turn up something closer. If not, it would be
easier to modify that stuff than start from scratch.

--
Ned Simmons