O-Ring is a simple type of seal, also called a torus joint/ mechanical gasket packaging which is manufactured in the shape of a torus. We can also define the same as an elastomer’s loop which comes with a cross-section that is used to create a seat between the two parts which have to be compressed together.
This type of O-Ring is used in dynamic as well as static applications. Some examples of its dynamic application can be a rotation of shafts of the pump along with the pistons of the hydraulic cylinder. On the other hand, the static applications of the o-ring include sealing of any type of gas or fluid. One will be able to notice the use of this O-Ring which comes in many different types in various machinery designs. However, given the importance of the same, they are available at a reasonable price in the market. If you are looking to buy the same from the market, all you have to know is what type of O-Ring you want. For example, if you want silicon O-Rings, then you can contact a supplier dealing in the same and if you want Viton O-Rings, then you have to look for a supplier who has that.
Now that you have the basic and fair enough idea about what is O-Ring and where is it used, let us inform you about some common reasons why these very important O-Rings being used as seals get damages due to various environmental factors and how can we prevent the same.
Common Causes Responsible for the Sealed O-Ring Failure and How to Prevent Them
1. Compression Set
The first and the foremost most common reason for the failure of O-Ring is compression set. Now the question which arises is how does this happen? Well, to answer the same such a situation arrives when there is no continuous seal line between the two surfaces which have to be sealed. This formation of the seal line is very necessary because it is the only way one will be able to determine that the right amount of pressure and squeeze is exerted on the O-Ring.
To explain this in simple terms, such a failure happens when the shape of the O-Ring gets distorted or deformed.
Preventive Measures-
- Inspection of O-Ring from time to time by the professional Rubber O Ring supplier.
- Keep a check that the operating temperature is less or maintained.
- Always tally and check the physical properties of all O-Rings when delivered to you.
2. Nibbling and Extrusion
This is one of the most common failure causes. But, before we begin to tell you how to prevent this let us understand what is nibbling and extrusion. We can say that such a failure takes place when the side of low-pressure of the downstream side of gland seems to appear little chipped due to constant nibbling. In such a case there is a possibility that almost half of the O-Ring can be destroyed before the catastrophic leakage.
Preventive Measures-
- Make a proper comparison between O-Ring material and fluid for their compatibility.
- Make sure you have picked the right size as a slight negligence can fail.
- Try to make metal components more rigid.
3. Abrasion
The last common cause on our list is “Abrasion”. Readers should note that this type of failure is common in the case of dynamic application.
Preventive Measures-
- Try to buy the O-Ring with a material whose abrasion resistance is high.
- Make sure that the lubrication provided by the fluid system is functioning correctly in required limits.
- Make use of surfaces with proper finish.
