Loctite instant universal low viscosity toughened gel amp flexible adhesives loctite 142512 loctite 454 is designed for the assembly of difficult to bond materials which require uniform stress distribution and strong tension andor shear strength it provides rapid bonding of a wide range of materials including metals plastics and elastomers the gel consistency prevents adhesive flow even on vertical surfaces loctite 454 is also suited for bonding porous materials such as wood paper