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Use our free online chemical compatibility checker to find the right materials for your chemical uses. Our chemical compatibility chart is powered by an in-depth chemical compatibility database so finding the right chemical and material combinations has never been easier.


Material Rating

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Rating System

This chart shows materials rated on their compatibility with chemicals in a letter grading system. The grades for this chemical compatibility guide are as shown below.

A = Excellent - recommended for use

B = Good - Minimal Effect - minor discoloration and/or corrosion

C = Fair - Moderate Effect - swelling may occur, not recommended

D = Poor - Serious Effect - not recommended for any use

N/A = Information Not Available

Temperature Rating System

Some letter grades shown in this chemical compatibility chart may be accompanied by a number for example "A1". The number indicates that the material is rated up to a higher temperature.

Letter ratings without number (A, B, C, D) are rated between at least 18°C (64°F) and 23°C (73°F)

Letter ratings with numbers (A1, B1, C1, D1) are rated to at least 48°C (120°F)

Please note these are the temperatures that the materials have been rated at and are not representative of the material's minimum or maximum operating temperatures.



All information shown on this page has been supplied to Valves Online by other reputable sources. Material ratings shown on this page are only to be used for guidance when selecting materials for the appropriate chemicals. Before installing any equipment, the proper testing and safety measures for your chemicals should always be taken.

The chemical gradings shown in this chart are based on a 48-hr exposure period. Valves Online do not have any knowledge of the effects that may occur beyond this period. Information is subject to alteration and should be used as a reference only. Valves Online accept no responsibility for any inaccuracies that occur and do not warrant that any material is suitable for any purpose.


Chemicals can be highly dangerous. The proper safety precautions and equipment should be in place at all times. Please ensure that suitable protective measures are in place when handling chemicals.

The information contained in the chemical compatibility database is believed to be correct. Valves Online accepts no liability for any errors it contains. It is the users responsibility to ensure chemical compatibility within their application.


Please, be aware that factors such as temperature, pressure, and concentration can change chemical behaviour and may cause equipment failure despite passing the initial testing.