A truck , comprising a steering shaft mounted between a cabin and a steering system of the truck, and extending through an opening in a cabin floor of the cabin, wherein the cabin is tiltable relative to the steering system between a drive position (P D ), in which the steering shaft is substantially perpendicular to a driving direction (X) of the truck, and a service position (P S ), in which the steering shaft is substantially in the driving direction (X) of the truck, wherein the truck comprises a moulded sealing device for sealing the opening in the cabin floor , wherein the sealing device comprises: - a cabin connector , comprising a mounting surface circumferentially connecting the sealing device to the cabin floor around the opening ; - a shaft connector , comprising a cylindrical inner surface connecting with an outer surface of the steering shaft ; and - an extendible sleeve , extending radially between the shaft connector and the cabin connector and folded in a fold pattern, wherein the extendible sleeve is extendible from a neutral position; wherein at least the extendible sleeve is moulded from an elastically deformable material; wherein, in the neutral position, the fold pattern comprises first fold flanks oriented substantially normal to the mounting surface , and second fold flanks oriented substantially coaxial with a centreline of the cylindrical inner surface ; and wherein, in the neutral position, the centreline is at an angle to the mounting surface , thereby providing at least one of the first or second fold flanks with a negative draft angle for releasing from a corresponding mould, wherein, from the neutral position, the extendible sleeve is arranged for allowing a tilting movement of the shaft connector relative to the cabin connector , between the drive position (P D ) and the service position (P S ), while the opening in the cabin floor is sealed. - a cabin connector , comprising a mounting surface circumferentially connecting the sealing device to the cabin floor around the opening ; - a shaft connector , comprising a cylindrical inner surface connecting with an outer surface of the steering shaft ; and - an extendible sleeve , extending radially between the shaft connector and the cabin connector and folded in a fold pattern, wherein the extendible sleeve is extendible from a neutral position; wherein at least the extendible sleeve is moulded from an elastically deformable material; wherein, in the neutral position, the fold pattern comprises first fold flanks oriented substantially normal to the mounting surface , and second fold flanks oriented substantially coaxial with a centreline of the cylindrical inner surface ; and wherein, in the neutral position, the centreline is at an angle to the mounting surface , thereby providing at least one of the first or second fold flanks with a negative draft angle for releasing from a corresponding mould, wherein, from the neutral position, the extendible sleeve is arranged for allowing a tilting movement of the shaft connector relative to the cabin connector , between the drive position (P D ) and the service position (P S ), while the opening in the cabin floor is sealed. <EOS>