... ,fast curing, permanently flexible; 3,excellent waterproof & weather resistant; 4,equivalent to Dow. Description:OLV568 Fast Cure Glazing Silicone Sealant is ... only for reference purpose, not intended for use in preparing specification. OLV568 Fast Cure Glazing Silicone SealantPerformanceStandardMeasured ValueTesting MethodTest at 50 ...