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Planning guideMaterialsMaterial table - PropertiesDesignation Service temperature Resistant Non-resistant Application areas[°C]Seal materialsEPDM -30...+120 Water without chemical additives,caustic sodas,hydrochloric acid,phosphoric acid,salt waterFPM (= Viton) -25...+120 Sewage pH 3 to pH 10,fuels,mineral oils,phosphoric and sulphuric acidsNBR -30...+100 Sewage pH 6 to pH 10,water without chemical additives,fuels,mineral oils,salt waterFuels,kerosene,sulphuric acid,nitric acidAcetic acid,nitric acid,benzolNitric acid,sulphuric acidHousing seals,Mechanical seal bellowsHousing seals,Mechanical seal bellowsHousing seals,Mechanical seal bellowsHousing and peripheral materialsAbrasite -25...+200 Sewage withabrasive constituentsStainless steel 1.4301 -20...+120 Mineral oils,water without chem. additives,alcoholsStainless steel 1.4404 -20...+120 Mineral oils,water with chem. additives,alcoholsPE 0...+90 Sewage pH 4 to pH 9,water without chem. additives,inorganic dilute fluidsPP 0...+90 Sewage pH 4 to pH 9,water without chem. additives,inorganic dilute fluids,*salt waterPUR 0...+80 Seawater*,acids,bases,pH 3 to pH 13,fats,machine oils,benzineAcidsSeawater*,hydrochloric acid,concentrated acids andalkaline solutionsSeawater*,hydrochloric acid,concentrated acids andalkaline solutionsConcentrated acids andalkaline solutionsConcentrated acids andalkaline solutionsHighly aggressiveacids and bases* Conditionally resistant depending on the fluid temperature and other organic and inorganic fluid constituentsPump housings,impellers,mixer headMotor housings,hydraulics housings,impellersMotor housings,hydraulics housings,impellersPump housings,impellers,pipes,pump sumps,fitting ductsPump housings,impellers,non-return valves,pump sumpsPump housings,impellers,connection elements,agitators30 Wilo Water Management catalogue – 50 Hz – Drainage and sewage – Waste water transport and dewatering – Edition 2012 – Subject to change without prior notice