How can I reduce or avoid twisting in my o-rings?

Under normal use, O-rings generally do not twist or roll under reciprocating motion, because the contact area between the rubber O-

ring and the groove is larger than the frictional contact area on the sliding surface, and the resistance of the rubber O-

ring itself can prevent twisting. However, in the case of improper use, it is easy to cause distortion and damage, which can lead to leakage.

There are three main reasons for the twisting of O-rings

1. The gap between the piston, piston rod and cylinder barrel is uneven;

2. The cross-sectional diameter of the O-ring is uneven;

3. The friction of the O-ring is uneven.

Here are some ways to reduce the twisting of your o-rings

1. Choose the right O-ring material, you can choose a material with low coefficient of friction. Especially when used in high-temperature or chemically corrosive environments, it is necessary to choose materials that are resistant to high temperatures or corrosion.

2. Increase the cross-sectional thickness or radial thickness of the O-ring, use appropriate preload, avoid strong shock or vibration, and reduce the deformation of the O-ring.

3. Ensure that the quality and quantity of lubricating oil or grease are appropriate, and avoid excessive twisting caused by dry friction or poor lubrication.

4. During the installation process, try to avoid the O-ring being stretched or stuck in the mounting hole, adhere to the corresponding installation position, and use appropriate tools and methods for installation.

5. Do a good job of the balance and symmetry of the O-ring, and reduce its unilateral twisting in use as much as possible.

6. Regularly inspect and replace the O-rings with aging, hardening, breakage, deformation and other problems to ensure their good sealing effect and service life.