Sustainability in the supply chains (SCs) has become an essential and intrinsic element in the design of new and remodeling the current SC networks. One of the best practices of sustainability is design and operation of closed-loop supply chains where malfunctioned products can be collected and re-used. If a product requires a minor service, the required repair is provided in the collection centers and the product is returned into the market as refurbished. If the product requires a major service, the product would be either remanufactured or recycled and used as raw material. In the case that the product is out of the order, it will be disposed safely with regard to environment regulations. In this paper, a mixed integer linear programming (MILP) model is proposed for a closed-loop supply chain network design under uncertainty. The model is a multi-stage, single commodity, single period, and capacitated where demand for new and refurbished products and the amount of returned products are stochastic. In the manufacturing stage, the possibility to build on-site remanufacturing plant, called hybrid manufacturing/remanufacturing site is examined. In the distribution center stage, risk pooling is considered as an effective inventory policy for new and refurbished products.