Power optimized PTFE expansion joints for absorbing axial, lateral and angular movements, both for conventional requirements as well as for use with elevated PTFE wall thicknesses for harsh process conditions (Extra Heavy Duty). Besides virgin (white) standard PTFE is in case of need also electrostatically dissipative (black) PTFE available. A selectable number of convolutions allow extended movement requirements. Versions with exceptional vacuum resistance and models in double wall construction for increased safety criteria complete the offer range.