2-PART EPOXY ADHESIVE FOR SIKADUR-COMBIFLEX SYSTEM AND SIKA DILATEC SYSTEM. DESCRIPTION:- Sikadur-31 C is solvent-free, moisture tolerant, twopart epoxy based thixotropic adhesive for bondingSikadur-Combiflex SG tape and Sika Dilatec tape todifferent substrates. It can be used for both internaland external use.