I was sorthing through the air bags I recently replaced because I was thinking of retaining one of each type as a spare. As I looked them over it became evident that I replaced them at the right time.

Every one, including those that showed no corrosion or deterioration on the top of the bottom cannister had signs of dry rot. Where the air bags "roll" onto the bottom they all had small surface cracks and the rubber was seen to be losing its flexibility.

All 8 are now in a large waste container at our local refuse and recycling center.