When looking over the requirements of a new project designers must balance the price of the product and features that are implemented.  Rigorous requirements sometimes yield higher cost materials. Environmental concerns will also guide the feasibility of using a viscous damper. Physics usually gets in the way of pipe dream  features and practical use. For the most part rotary viscous dampers add value and a high quality feel to a product.  But, is it in the budget? You must decide whether you are a high end product manufacturer or not.  What is your niche? Who are you appealing to? Consider these things before product realization occurs.  Contact us at www. Mmtech.us for a consultation.