Patent ID: 7264550

Claim:
A convoluted boot comprising: a flexible first boot portion comprising a first collar and a second collar; and a flexible second boot portion comprising a third collar and a fourth collar, the first and second boot portions each being convoluted portions comprising a plurality of annular folds between the respective collars such that at least the third and fourth collars are axially displaceable relative to each other, the first and second boot portions sealing an annular chamber between two parts which can be articulated relative to one another and which are axially displaceable relative to one another, wherein the second boot portion is positioned inside the first boot portion and wherein the third collar has a smaller diameter than the first collar, and wherein the first collar is firmly connectable to the first one of the parts, the third collar is firmly connectable to the second one of the parts and the fourth collar is firmly and sealingly connected to the second collar and the fourth collar with the second collar being axially displaceable relative to the second one of the parts.