CHEMICAL COMPATIBILITY TABLE
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INDUSTRIAL PUMPS SINCE 1982 MADE IN ITALY CHEMICAL COMPATIBILITY TABLE REV. 12/2016

CHEMICAL COMPATIBILITY TABLE NB The information contained herein is only to be used with regard to the initial choice of pump construction materials. We have obtained this information from reliable sources. Debem has not performed any form of testing in this regard and therefore accepts noliability for the accuracy of the details provided. Each application has its own specific set of parameters as regards stress, exposure time, chemical concentration and temperature. Debem recommends practical testing of materials coming into contact with chemical substances. NOTE REGARDING HALOGENATED...

SUMMARY OF THE PLASTIC AND RUBBER MATERIALS CODE/TRADENAME DEBEM CODE NBR (PERBUNAN®) EPDM (DUTRAL®) PVDF (KYNAR®) ECTFE (HALAR®) PP PPS (RYTON®) PTFE (TEFLON®) FPM (VITON®) SANTOPRENE® HMWHDPE (POLIZENE®) HYTREL® Nitrile Rubber Ethylene Propylene Rubber PVDF ECTFE Polypropylene PPS PTFE Fluorocarbon Rubber Thermosplastic Rubber High Molecular Weight High Density Polyethylene Fluoro-Elastomer Acrylonitrile-Butadiene Ethylene Propylene Terpolymer Polyvinylidene Fluoride Poly(EthyleneChlorotrifluoroethylene) Polypropylene Polyphenylene...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS NITRILE RUBBER (NBR) NON-PROPRIETARY NAME: Nitrile rubber, NBR. COMMERCIAL NAME: Perbunan N, Europrene N. A butadiene-acrylonitrile copolymer whose ACN content can range from 18% to 50%. CHARACTERISTICS - Good mechanical properties; - good compression set resistance; - good impermeability to air and gases; - good colourability; - poor UV-radiation resistance; - poor dielectric properties; - no flame resistance. CHEMICAL COMPATIBILITY AND BEHAVIOUR Good resistance: - mineral oils and greases; - light fuel oils, gas oil; - aliphatic...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS The mechanical resistance values of PP are higher than those of the PE. Alkali and acid resistance makes it suitable in the chemical industry for items subject to relatively weak strains. ADVANTAGES - High chemical resistance; - resistance to tensile strength, high values as regards polyolefins; - low specific weight; - easily machinable by machines or for welding. DRAWBACKS Low mechanical resistance compared to technopolymers: tensile, flexural, compression, and others as well as thermalstress. Stiffer and less resistant to...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS This a new fluoro-polymer. As in the case of the fluoro-materials, chemical strength is its most interesting asset. Compared to PTFE, mechanical characteristics are much higher besides not being subject to deformation under load. ADVANTAGES High chemical strength typical of fluoro-materials. Compared to PTFE higher mechanical strength such ach as tensile and compression. Excellent resistance to both low and high temperatures up to 160°C, as well as to UV beams. Very good dimensional stability. Good wear strength. DRAWBACKS Lower...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS Fluoro material widely used for its excellent chemical strength but with weak mechanical properties. Deformation even under very small loads represents a useful feature to make seals. ADVANTAGES High chemical resistance. Excellent resistance to both low and high temperatures up to 260°C. Low flammability. Low friction coefficient. DRAWBACKS Mechanical strength values such as tensile and compression are very low and in particular deformation strength underload is scarse. APPLICATIONS Mechanical: because of its low friction...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS Excellent ozone and oxygen resistance. Articles manufactured from EPDM rubbers can tolerate the action of oxidising agents under both static and dynamic conditions. There is no need to add antiozonantsor antioxidants in order to obtain this behaviour. Excellent resistance to degradation caused by weathering. Good high-temperature resistance (up to 150°C) in both dry and wet atmospheres (protected compounds). Good low-temperature resistance: flexibility is maintained up to -55°C. Excellent dielectric properties. High compression set...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS UMWHDPE POLYETHYLENE High molecular weight polyethylene (> 1.000.000) with excellent impact strength. Compared to the PE’s with lower molecular weights, this type of material is less stiff and more resistant to impact, which makes it more suitable for applications involving repeated shocks. ADVANTAGES Good impact strength even at low temperatures, high chemical strength typical of the polyolefin materials, high abrasion strength, low friction coefficient. DRAWBACKS Compared to technopolymers, mechanical strength values are low:...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS HYTREL® GENERAL GUIDE TO PRODUCT AND ITS PROPERTIES HYTREL® is the trademark registered by Du Pont for its range of engineered thermoplastic elastomers. PROPERTIES AND CHARACTERISTICS. HYTREL® is a thermoplastic elastomer for engineering applications that combines several of the best features of high-performance elastomers and flexible thermoplastics. HYTREL® boasts exceptional toughness and elastic flow, high creep, impact and flexural fatigue strength and excellent low-temperature flexibility, whilst also maintaining its...

GENERAL CHARACTERISTICS OF PLASTIC MATERIALS AND ELASTOMERS FPM (FLUOROCARBON RUBBER) (e.g. VITON®) APPLICATIONS Fluoroelastomers notable resistance to heat and chemical agents has improved the performance of various auto and aircraft components and many types of industrial equipment. These mean that the industry can be supplied with items such as O-rings, diaphragms, coatings, rubberised fabrics, pipingand a huge variety of special parts for use under an exceptionally-large range of operating conditions. RESISTANCE TO OILS, FATS AND CHEMICAL AGENTS The performance of fluorocarbon rubber in...