Marflex RCHB60HTBromobutyl MarflexTM cured, black, bromobutyl lining with superior temperature resistance for field lining and repair. FDA compliant. For more information about this product, complete the form below or call 800-321-5583. Specs: Application: Acids and Caustic Solutions Durometer: 60 A PDF Downloads: Spec Sheet (PDF) SDS (PDF) Notice: JavaScript is required for this content.