Processing math: 100%

O-Ring Size Calculator

Formula

The formula to calculate the outside diameter of an O-Ring is:

$OD = ID + (2 \times CS)$

Where:

$OD$ is the outside diameter of the O-Ring (mm)
$ID$ is the inside diameter of the O-Ring (mm)
$CS$ is the cross-sectional diameter of the O-Ring (mm)

What is an O-Ring Size?

An O-ring size refers to the dimensions of an O-ring, a mechanical gasket in the shape of a torus or doughnut. The size is typically defined by its internal diameter (ID) and its cross-sectional diameter (CS). These dimensions are crucial in ensuring a proper fit and effective seal in a variety of applications, such as in mechanical devices and plumbing systems, to prevent the escape or entry of gases or fluids.

Example Calculation

Let's assume the following values:

Inside Diameter ( $ID$ ): 20 mm
Cross-Sectional Diameter ( $CS$ ): 2 mm

Step 1: Multiply the cross-sectional diameter by 2:

$2 \times 2 = 4$

Step 2: Add the result to the inside diameter:

$20 + 4 = 24$

Therefore, the outside diameter of the O-Ring is 24 mm.