Elastomers Chemical Compatibility Chart, a New Resource
The new ISM Elastomers Chemical Compatibility Chart is now available as a downloadable PDF
Introduction
Product development and routine maintenance require choosing and sourcing parts. Knowing the right questions to ask helps ensure the correct part is ordered. Our new Elastomers Chemical Compatibility Chart is another in a series of ISM technical resources that help make component selection faster and easier.
Chemicals in the operating environment
Systems and their operating environments frequently expose flow control components to aggressive chemicals and cleaners. Many solvents and lipids can be harsh chemicals. They could cause premature wear to the elastomers used in duckbill and diaphragm check valves or O-ring seals.
Factors that may influence chemical effects on elastomers
- Elastomer type
- Durometer or hardness
- Chemical class
- Type of application
- Temperature
- Exposure time
- Hardening because of aging
Elastomers listed in the new ISM Elastomers Chemical Compatibility Chart
- Buna N (Nitrile, NBR)
- EPDM (Ethylene Propylene)
- Kalrez® (FFKM)
- Fluorosilicone (FVMQ)
- Hydrin® (ECO, Epichlorohydrin)
- Hytrel® (TPE)
- Natural Rubber (NR)
- Neoprene (CR)
- Polyurethane (PUR)
- Silicone and Viton® (FKM)
Evaluating chemical resistance
It is best to test parts in actual conditions because the chemical resistance of elastomers can be difficult to predict. ISM offers samples to our customers as a way to assist their testing and decision-making. These can be requested when browsing our catalog.
Factors that make it difficult to predict how elastomers react to chemicals
- Temperature
- Exposure time
- Chemical combinations
- Chemical concentrations
Get a copy of our Elastomers Chemical Compatibility Chart
Related blog post
- Elastomers and Rubbers – Is There a Difference?
- Learn more about elastomer selection at Encyclopaedia Britannica
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