O-ring with dynamic seal and friction force
Compared to the static varieties, dynamic rubber O-rings are subjected to a higher mechanical stress. Since they are inserted between 2 moving parts, the risk of wear is far greater. Choosing the right lubricant is thus even more important.
The O-ring is the sealing device par excellence, capable of satisfying numerous needs and sectors.
A rubber O-ring is a band of elastomer with a circular profile, designed to be inserted into a suitable housing and compressed during the assembly of two or more parts. This compression increases with rising pressure, helping to improve the sealing effect.
Like most seals, a rubber O-ring is used in many situations of different nature in which it is in contact with liquid, solid and gaseous combinations.
They are also made with multiple compounds, in different sizes and hardnesses, hence why it is necessary to use a lubricant specifically designed for their characteristics to ensure maximum performance in terms of duration and performance.
To what extent? Let's see it together!
When it comes to dynamic seal rubber O-rings, one very important factor affecting the quality of the seal and gasket is the frictional force.
The premise is the value of the friction coefficient between dynamic rubber O-rings and components is high but an adequate lubricant between the wall and gasket certainly contributes to its reduction, in quite a significant way.
Dynamic applications can be divided into two main types, depending on whether the seal is for liquids or gases:
All contact between a rubber O-ring and a lubricating fluid creates a chemical reaction that can have more or less evident effects on the gasket itself. They are distinguished mainly in two effects:
Both of these phenomena can occur for different reasons but it is quite clear that they are unnatural situations in the operation of the machinery and of the gasket, which can also have very serious consequences. Indeed, after coming into contact with the lubricant, a rubber O-ring can undergo important changes, such as:
Any potential interactions with the fluids or greases used for the assembly or lubrication of the rubber O-rings can destroy your work from the outset, thus you must trust in the experts to help you best complete an evaluation based on your actual needs.