New tire slime is green, BUT, isn't it really sticky after been in awhile? Burlap, no idea. Maybe guy had many flats with thorns or such, tried to wrap the tube with something to make thicker and resistant to pokes, then the slime to repair itself as it says?? My opinion, a new Wheel would be going on too. That one looks like it could let loose of itself very easy. I would have to blast it, and no telling if it would last thru that or not. Besides, the rough surface is gonna be bad for tube, unless you "Duct Tape" the rim......ha, ha! Had to throw that in with the other post about it. Would think JD parts are easy to find. New wheel needed!
No, this green stuff wasn't sticky at all. Like I said above, it just reminded me of antifreeze, due to the color and liquid thickness. I didn't remove the opposite side tire as it is holding air fine, but I may have to change my thinking, just to see if it holds the same content. I know these little tractors are light on the front end, and I can understand using the liquid for added weight, but now I'm curious to see if the other side is the same. Just removing the wheel and feeling the weight of it should tell me if it's filled or not.
As for the condition of the rim itself, it really isn't rusted, other than your normal surface rust. I have no worries about the rim condition at all. The brown that you see above around the inside of the rim, is this burlap looking stuff. I scrapped all of that stuff out, and the rim looked good. As I said, I'm really surprised at how well the rim condition was, since having this wet burlap stuff wrapped around it for who knows how many years. I have extra rims that I can use to replace this one, but I don't think it's necessary in this case.