a tensioner comprising a base , a pivot arm pivotally engaged with the base , a torsion spring engaged between the base and the pivot arm for biasing the pivot arm , a first damping member and a second damping member disposed between the pivot arm and the base , the first damping member wedgingly engagable between the pivot arm and the second damping member , and the second damping member frictionally engaged between the first damping member and the base .