What are mechanical seals?
By adding a mechanical seal, you prevent leakage of liquids. This is mainly used with rotating machines that transport oil or water. This keeps the liquid in place. Therefore, prevents any environmental pollution and ensures higher machine safety. Below we explain to you which different closures there are and what you can use them for.
Different types of mechanical seals
There are many types of mechanical seals. These can differ in design and how much pressure they can take. Here is a list of the most common mechanical seal types:
- Pusher seals: pusher seals use springs to maintain the closing force of the seal. This may concern 1 or more springs. This allows pusher seals to withstand very high pressures. The disadvantage is that they can wear out quickly due to friction.
- Non-pusher seals: non-pusher seals use an elastomer or metal bellows. This preserves the sealing power of the seal and makes it a very suitable seal for dirty applications with high temperatures. Bellows seals do not withstand high pressures well, making them only suitable for low to medium pressure applications.
- Unbalanced seals: unbalanced mechanical seals are used for cheaper option in complex balance seals. Care must be taken that the pressure exerted on the applications is not too high. Hydrocarbon applications are also not recommended.
- Balanced seals: balanced mechanical seals have a sealing face that is completely balanced. This results in a lower surface load and ultimately a longer service life. In addition, balanced mechanical seals are suitable for higher working pressures.
- Cartridge seals: cartridge type mechanical seals are easy to install. The name says it all. Because the seal composes all sealing elements, assembly errors are drastically reduced. Installation also takes very little time.
- Conventional seals: conventional seals are often installed on general maintenance equipment. An advantage of these seals is the price. However, they are more difficult to maintain because the seal is installed in separate components.
Benefits of mechanical seals
Mechanical seals are the preferred sealing method for most pump makers. Because of the many different seals they suit a variety of applications. So you always have a seal that fits your desires. Mechanical seals offer 5 different advantages:
- Zero product leakage: the reason mechanical seals are made for is to prevent pumped fluid from leaking. Leaks can occur. However, these can be prevented by proper ventilation and installation.
- Maintenance reduced: When correctly installed and aligned seals are extremely durable. Repairing a seal is easy and inexpensive. This way you can quickly use your pump again.
- No excessive wear: a properly installed seal will help protect your pump. Following the installation and alignment guidelines provided will extend the life of your device.
- Reduction of power and friction: the faces of your mechanical seal should be lubricated with a film of liquid. If you also optimize the distances between the surfaces through the correct installation, you prevent friction and loss of power.
- Save costs in the long run: by adding a proper seal, you prevent unnecessary fluid loss in the event of leaks. This also prevents pump failures and easy maintenance. This results in cost savings that you can spend on other things in the longer term.
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