Loctite 5140 is used for potting, coating and sealing of various automotive, electronic, military and industrial components. It resists weathering, moisture, ozone and retains its properties through severe environments. LOCTITE® SI 5140 is a translucent to milky white, viscous, alkoxy silicone potting compound and sealant liquid. The product is suitable for various electronic, military and industrial components. It resists weathering, moisture and ozone. LOCTITE® SI 5140 is also non-corrosive and self-leveling, and enhances the load-bearing and shock-absorbing characteristics of the bond area.