... , fittings, flanges, expansion joints:Metal Expansion Joints Unlike flat and U-belt expansion joints, FlexCom metal expansion joints contain no fabric components, ... high pressure (up to 300psi, versus 5-7psi in fabric joints) or liquids. Custom designed from high quality materials, our ... patterns via fixed or floating flanges, or else to be welded directly to ductwork. If you require data sheet, please ...