VE645BGCChlorobutyl Tri-Bond EnduraflexTM black, soft/semi-hard graphite/100% chlorobutyl, Tri-BondTM lining for wet chlorine service with tie gum. Exhaust steam or pressure cure. For more information about this product, complete the form below or call 800-321-5583. Specs: Application: Wet chlorine service. Durometer: 50 to 65 A Pressure Cure: 50 to 65 A PDF Downloads: Spec Sheet (PDF) (SDS) Notice: JavaScript is required for this content.