Henkel’s LOCTITE® 518 gasket sealant was first introduced to overcome the problems associated with pre-cut compression gaskets: failure and leakage due to poor surface contact, the tendency to relax under dynamic load and bolt hole distortion that cause it to crack and tear. Loctite® 518 is the ideal alternative as it fills voids, resists high pressure and when fully cured maintains clamp load and prevents corrosion. It can cure through light surface contamination, and works well on stainless steel and aluminium without an activator and is now available in a pen form that delivers the leak-fighting properties of Loctite 518 via a roller. Application is easier with no waste and less mess.