: Assembly/disassembly (A/D) simulations using haptic devices are facing difficulties while simulating insertion/extraction such as cylinders from holes. In order to address this configuration as well as others, an approach showing that contact identification between components can efficiently contribute either to a new A/D simulation preparation process relying on two types of shape representations (mesh and CAD NURBS models), or directly to the real time simulation process when it is performed with 6D haptic devices, is presented in this paper. The model processing pipeline is described and illustrated to show how information can be propagated and used for contact detection. Then, the contact identification process is introduced and illustrated through an example.