Mystery rubber bumper

[Rick Coleman]

I found a dark gray round rubber bumper/cushion on the ground by my entry door. It is approximately 3/4" in diameter, and stands approximately 1/2" tall (it looks like a 3/4" diameter ball cut in half). Flat on the back. I vaguely recall seeing it somewhere on the entry door/screen door, but can't recall where. Anyone know where this puppy goes?

Thanks

[Rick Coleman]

I found a dark gray round rubber bumper/cushion on the ground by my entry door. It is approximately 3/4" in diameter, and stands approximately 1/2" tall (it looks like a 3/4" diameter ball cut in half). Flat on the back. I vaguely recall seeing it somewhere on the entry door/screen door, but can't recall where. Anyone know where this puppy goes?

Thanks

[bigfish]

Maybe it's the disc that's mounted on the door and contacts the button switch to activate the step when door is closed.
BTF