Sealing material used between the hoses and the ducts for rear brake cooling.

[Berommens]

Hi,i need to replace the rear brake cooling ducting. I suspect it is still the original installation on the car. The hoses are attached to the plastic ducts with one rivet on each side of the hoses. When I removed the hoses, I also saw residue of some kind of sealant. Does anyone know exactly what was used to seal the hoses to the ducts?

[JD]

Black Strip Caulk, like used in other areas.