Welded ends metal bellow seal is an inherently balanced metal bellow seal. This seal is independent of direction of rotation. The unique feature of this type of seal is that, there are no dynamic `O' rings and therefore it will never hang up or damage the shaft and sleeve. This seal has self-cleaning & non-clogging construction. With selection of special bellow material it can be used in highly corrosive media. It is used for handling highly corrosive chemicals, high temperature applications and petroleum refinery.