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Everything you need to know about gaskets

Gaskets are mechanical seals placed between two objects or mating surfaces with the purpose of preventing leakage. The two joined objects, which are generally under compression, are secured with a gasket to avoid any kind of leakage into or from the objects. Creating perfect mating surfaces is an impossible task, but with custom gaskets Ottawa, the irregularities are filled perfectly. Thus, gaskets are generally made from materials that are yielding to some degree, because they need to take the form of the irregularities and fill the space between mating surfaces tightly. Mechanical seals have numerous applications that are often very specific, which is why manufacturers are also required to offer rapid prototyping Ottawa services.


Gasket requirements

A mechanical seal requires resistance against flange irregularities and dimensional changes during operation. A good gasket will have a superior compressibility and recovery, not to mention face adaptability. Its very purpose implies the need to adapt to any changes and offer protection against leakage. Considering the fact that gaskets are prone to wear and tear, their strength and durability are also essential. It is common knowledge that gaskets need to be changed once every couple of years whether they present signs of damage or not to ensure they will not break during crucial moments. However, things have changed and manufacturers like can guarantee the durability of their gaskets for longer periods. Chemical and temperature resistance are also essential gasket requirements, not to mention limited relaxation.


Types of gaskets

They can be classified into two main categories: metallic or semi-metallic gaskets, and non-metallic gaskets. While metallic or semi-metallic mechanical seals are designed for high pressure applications, non-metallic gaskets are designed for low pressure applications. Corrugated metal gaskets, metal jacketed, ring joints, camprofile and spiral wound baskets are metallic or semi-metallic, while fibre reinforced, graphite, PTFE and rubber gaskets are non-metallic.


The importance of routine maintenance

Gasket problems are often preventable, if routine maintenance is done. It is important to establish the temperature resistance of the gasket and preventing it to reach the limit. Overheating the gasket will eventually lead to failure. Using the right type of sealing and keeping up with the maintenance can help you avoid damage. Maintenance is fairly inexpensive, but gasket failure might cause serious problems in the long run.


Improved gaskets

Mechanical sealing will always play an essential role in any system, so gasket failure is something users need to avoid with any costs. To prevent such unfortunate situations, gaskets have been reinforced with the help of an inner compressing ring or outer guiding ring. Both are minor improvements compared with the use of materials such as optic fibre and granite, but they can make a difference in the end. The compression ring is designed to permit a higher flange compression, while the outer guiding ring is in fact a compression inhibitor. They are generally used when standard gaskets experience a high rate of failure, which is not the case with custom gaskets created by manufacturers that specialise in prototyping.