Document rB0aZ1gQRaoManR7RxwoYRzv7

OECD polymer of low concern (PLC) criteria and additional customeer related criteria Polymers currently in use PTFE FKM/ FPM alle grn Alternative Materials for lining EPDM NBR PUR rubber ECO (Epichlorhydrin rubber) H-NBR Symbols Legend Firmness Elasticity Permanent Compression Shore Hardness Range Rebound resilience Temperature resistance (1000h) Cold flexibility Ozone/ Weathering Resistance Oil/ Fuel Resistance Steam Resistance Acid resistance Caustic resistance Solvent resistant Firmness Meaning Accept Not fulfilled Accept with limitations Nearly not fulfilled Elasticity The material property of an elastomer returns it to its original size and shape The amount or measure of permanent deformation that occurs to an object, The measure of the resistance that a rubber material has to indentation. A du Elastic behaviour of elastomers when subjected to an impact load To be assessed when used as intended or in extreme temperature during dos Resistance at low temperatures; For all elastomers, it depends on the glass tr Polymers are stable, monomers are not. The tendency of rubber surfaces to u The extent of expansion or contraction of a material with mineral oil and fuel The extent of expansion or contraction of a material with steam and hot wate In presence of acid media the polymer may not change its properties significa In presence of caustic media the polymer may not change its properties signifi In presence of solvents the polymer may not change its properties significant Permanent Compression Shore Hardness Range Rebound resilience Temperature resistance (1000h) Cold flexibility turns it to its original size and shape after being deformed eformation that occurs to an object, such as an o-ring, affects its original density or shape after a force is removed. ber material has to indentation. A durometer is used to measure shore hardness bjected to an impact load r in extreme temperature during dosposal. Theermal stability testing may involve TGA lastomers, it depends on the glass transition temperature of the material. This is the temperature below which the elastomer changes fro The tendency of rubber surfaces to undergo rubber degradation from long-term exposure to ozone, certain pollutants, and harsh environm f a material with mineral oil and fuel contact f a material with steam and hot water contact ay not change its properties significantly r may not change its properties significantly not change its properties significantly Ozone/ Weathering Resistance Oil/ Fuel Resistance Steam Resistance Acid resistance ch the elastomer changes from a rubber-like to a glass-like state pollutants, and harsh environmental conditions. When elastomers are exposed to weather, this can cause degradation of the product. Caustic resistance ather, this can cause degradation of the product.