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O-Ring Basics

The Parker O-Ring eHandbook is a condensed online version of the printed Parker O-Ring Handbook ORD 5700. 

For those who are unfamiliar with O-ring design, it is recommended to first study this introductory section, becoming familiar with the basic principles of O-ring sealing, their common uses and general limitations.

Those who are already familiar with O-ring seal design may simply refer to the appropriate design tables for the information needed. Even those who have designed many O-rings may profit by reviewing the basics from time to time.

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    What is an O-ring?

    An O-ring is a torus, or doughnut-shaped ring, generally molded from an elastomer. An O-ring seal is used to prevent the loss of a fluid or gas. The assembly consists of an elastomer O-ring and a gland.
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    How an O-Ring Works

    An O-ring is used to seal and prevent the loss of fluids or gases.
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    Advantages of an O-Ring

    An O-ring is a torus, or doughnut-shaped ring, generally molded from an elastomer. An O-ring seal is used to prevent the loss of a fluid or gas. The assembly consists of an elastomer O-ring and a gland.
    Learn More


Parker Hannifin
O-Ring & Engineered Seals
2360 Palumbo Drive
Lexington, KY 40509
Ph: 859-269-2351
Fax: 859-335-5128
oesmailbox@parker.com
www.parkerorings.com