Yes on the second link. The first link are just clamps. Here is sorta what the rubber coupling I bought looks like. It has this metal sheet around it that the clamps are connected to. Just break the clamps off of the metal sheet and just use the rubber and clamps. http://www.menards.com/main/plumbing...878-c-9371.htm
I got the rubber grommet at Ace. It was in their nuts and bolts section in one of the drawers. They had very few but you need one with a 1/2" inner diameter for the sensor to fit snug into. Then I got some silicone adhesive to make sure the seal was tight.