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Engineering your success
O-Ring Selection made easy


Parker`s O-Ring Selector

is an engineering tool which offers O-ring material and size selection combined in one tool. Both are interlinked, thus ensuring the best possible combination of the calculated O-ring size and material choice.
The O-Ring Selector covers both imperial and metric standards.

How to use - Watch our Video

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Material Selector

O-Ring Material Selector

Find the most suitable sealing material by specifying your minimum and maximum Operating Temperature, the desired Polymer Group or Seal Hardness.

O-Ring Material Selector

The Advanced Material Selector allows you to specify your service conditions in even greater detail: For instance, you can select and combine the fluids which are relevant to your application by using the Filter by Fluid Compatibility search bar. This search and filter function searches a database of more than 2,500 different materials.

O-Ring Certifications

You can also search for Certifications

Size Selector

O-Ring Hardware Configuration

In the Hardware Configuration, you can choose between different sealing cases such as radial piston or rod sealing, axial sealing with internal or external pressure..

O-Ring Size Selector

After selecting a material that fits your sealing application, you can continue by having the Size Selector calculate the O-ring dimensions and tolerances, considering even thermal expansion and volume swelling of the sealing element. The parameter dashboard in the Results section will immediately show you if the selected O-ring size is suitable for your application.


Add your comments in the Notes section and save your calculation to your computer as a PDF document.

Contact us

Contact Parker Applications Engineering United States

Application Engineering / United States

phone : 859-335-5101

email : OESmailbox@parker.com

Contact Parker Engineering Europe

Application Engineering / Europe

email : praedifa@parker.com