Silicone hump hose has a bulge in it that is designed to allowthe joint to flex. Silicone hump hose allows for expansion and movement betweenpipes. By allowing a little flex in things you have less chance of pullingconnections loose and there is less stress on the rest of the piping. They alsoallow for slight misalignment between pipes.Inner: Silicone or Fluorosilicone
Cover: Silicone
Reinforce ply: 4 ply
Reinforce: Polyester / Aramid / Glass fiber
Color: Black/Red/Blue/Green/Yellow