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Method for measuring the small size of Rubber O-rings

Method for measuring the small size of Rubber O-rings

Method for measuring the small  size of  Rubber  O-rings as following:

1. Place the O-ring horizontally;

2. Measure the first outer diameter;

3. Measure the second outer diameter and take the average value;

4. Measure the first thickness;

5. Measure the thickness for the second time and take the average value.

An O-ring is an elastic rubber ring that serves as a seal and can be produced by molding or injection molding.

1、 Method for measuring the size of O-ring specifications

1. Horizontal O-ring

Place the O-ring flat and maintain a natural state without deformation to ensure accurate measurement.

2. Measure the first outer diameter

Measure the outer diameter of the O-rings  with a vernier caliper. Be careful to lightly touch the O-rings and not deform it.

Then record the measured data.

3. Measure the second outer diameter and take the average value

Rotate the vernier caliper 90 °, repeat the previous step, and continue with the second measurement data. Take the average of two data sets.

4. Measure the first thickness

Next, use a vernier caliper to measure the thickness of the O-ring.

5. Measure the second thickness and take the average value

Change the angle and measure the thickness of the O-rings again, then calculate the average of the two sets of data to complete the measurement.