Bellows mounting arrangement for swivel chair

An extendible and contractible boot is disposed in surrounding relationship to the spindle assembly of a chair. The lower end of the boot is anchored to the pedestal associated with the chair base. The upper end of the boot is supported on the seat assembly by a retainer arrangement which prevents vertical separation between the boot and seat assembly but permits relative rotation therebetween. This retainer arrangement employs a bearing ring, preferably of a split construction, which is snugly and resiliently seated within the upper end of the boot. A retainer plate is secured relative to the spindle and is rotatably supported on the bearing ring.