Loctite 406 is a fast curing, wicking grade viscosity, surface insensitive instant adhesive for post applications. This clear, surface insensitive, one-part, room temperature cure wicking grade instant adhesive is designed for OEM assembly of plastics and elastomeric materials where very fast fixturing is required. - Loctite 406 is designed for bonding of plastics and elastomeric materials where very fast fixturing is required.