APG’s C-8200 - Glass Fibers Reinforced Sheets with Hypalon Acid-Resistant Binder gasket material is specifically designed for an aggressive chemical environment and is an excellent choice for use with acids. C-8200 is resistant to most mineral acids and alkalis, ketones, and aldehydes. This premium material is manufactured with a unique blend of glass fibers reinforced with a special, Hypalon acid-resistant binder.