Properties of various diaphragm materials for diaphragm pumps

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Properties of various diaphragm materials for diaphragm pumps: Media – Nitrile rubber, Neoprene, Fluororubber, Polytetrafluoroethylene, Food-grade rubber. Smoke-producing substances: Nitric acid ××△△; Concentrated nitric acid ××△△; Concentrated sulfuric acid ××○△; Concentrated hydrochloric acid ×△△△; Concentrated phosphoric acid ×△△△; Concentrated acetic acid ××××△; Sodium hydroxide ○○△△; Water-free ammonia △△△△; Dilute nitric acid ××○△; Dilute sulfuric acid △△△△; Dilute hydrochloric acid ×○△△; Dilute phosphoric acid ××△△; Sodium hydroxide ○○△△; Ammonia water △△×; Benzene ××○○; Gas oil ○○○○; Petroleum △×○○; Carbon tetrachloride ○○○; Carbon disulfide ○×○; Ethanol ○○○○; Propanol ×△×○; Methanol ×△△○; Acetaldehyde ××△○; Ethylbenzene ××△○; Propylene ○△△×○; Butanol ○○○○; Butadiene ○×△○; Styrene ××△○; Acetate esters×××○; Ethers×××. Note: ○——longer service life, △——average service life, ×——not suitable for use. This table takes corrosion resistance into consideration only; since polytetrafluoroethylene has lower elasticity than rubber, the actual service life varies depending on factors such as pressure, pump stroke, and impurities present. Food-grade rubber is specifically designed for the food and beverage industry.