Most of the times it is easier to just replace a door closer. To improve the physical security of buildings and facilities replacing leaking door closer is necessary. Entrance/exit doors should not close rapidly or with much force to ensure the safety of people who travel at slower speeds or employ differing styles of movement. For replacement closers, consider the following: Closers made of heavy-duty cast iron can stand up to the toughest applications and help prevent leaks. Installation is usually easy – particularly when the closer offers a common hole pattern and fast, accurate install brackets. We, at Door Closers NYC are a company specialized in supplying/replacing door closers, give us a call for fast door closer service 212-960-8039.