Re: Sand And Weighting ?s
There is a high end latex silicone that may seal that up. Can't tell of a brand. Did an A/C job on a minivan years back. We had to rebuild the hoses to the rear evaporator. There at the floor board was the most brutal glob of white colored what looked like a latex caulk. We had an air chisel after it. What ever it was it looked quit invincible! Getting those hoses out was an act of denial for a few. [The cursing]
Still gotta have a since of humor.