Standard (Inch) Sizes

Standard, or Inch, sizes come in fractions of an inch, with special sizes in decimals. An O-ring seal is a means for closing off a passageway preventing an unwanted escape of a gas or fluid, and comes in a donut shape. For any questions, or if you can't find what you're looking for, please contact us at 1 (800) 445-7803 or at
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