Intended as a guide to the behaviour of this material in contact with chemicals as aggressive gases and fluids, e.g. acids, alkalies, solvents, etc. This information is based on practical experience of manufacturers and users and summarized in tables. Without prior knowledge or experience of application, table-based selections should be confirmed by tests, where attention should be paid to the possibility of rubbercontaminating the liquid or gas. Annex with references and tables.