Cartridge seals are versatile seals that suit a wide range of applications. Qseals specialises in cartridge seals and knows exactly how to get the most out of them for your business.
What is a cartridge seal?
Cartridge seals are quick to fit and are designed for easy removal from pump shafts. A cartridge seal is an assembly of several components that together form a single unit. Bellows seals and cartridge seals can be fitted as a cartridge, as long as the stuffing box is large enough. Cartridge seals also have plenty of other advantages: they are easy to replace and leave much less room for fitting errors.
What does a cartridge seal do?
A cartridge seal is used in the packaging industry to protect against contamination. It can be used for industrial packaging, military packaging, food packaging, pharmaceutical packaging and much more. Cartridge seals keep a product fresh and keep unwanted contaminants out. They are also suitable when you work with liquids or other materials classed as hazardous. The seals can be used in high-temperature environments, such as the pharmaceutical and medical industries, or in low-temperature environments, such as the food and beverage industry.
A safe and reliable way to seal
Cartridge seals offer a ready-to-fit sealing solution that is safe and meets strict legal requirements. You can fit cartridge seals easily in many different locations and remove them just as easily when needed. Thanks to their design, cartridge seals are also quick to adapt and flexible in use.
Why cartridge seals work so well
Mechanical seals in cartridge form use stationary components in a housing in which the rotating components are pre-assembled. These components sit on a sleeve sealed with an O-ring. This construction makes errors when fitting loose parts unlikely. The spring load on the seal is a key factor in how well the seal performs. With mechanical cartridge seals, the spring load is already set correctly before fitting.
Single cartridge seals
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Double cartridge seals
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Wet or dry fitting of cartridge seals
To maintain the correct pressure, the rotating and stationary elements of a cartridge seal stay in balance until the seal is fitted. Mechanical cartridge seals can be fitted in many different situations. A key criterion is whether the seal is installed from the wet side or the dry side of the seal chamber. Ask our experts at Qseals which option suits your situation best.
The advantage of cartridge seals over component seals
Cartridge seals cost more than component seals, but despite the higher price they quickly pay for themselves. They are the ideal cost-effective, long-term solution, because cheaper component seals need more maintenance. With cartridge seals you save on labour costs. The chance of having to replace a seal because of incorrect fitting is also much smaller, as cartridge seals have a better and more effective design.
The convenience of double cartridge seals
Double cartridge seals are an effective solution in demanding sealing duties. Think of high temperatures, high pressures and contaminated pumps that may contain damaging media. Because double cartridge seals have a chamber between the seals, a barrier fluid can be pumped into it to provide cooling, lubrication and protection. That makes it an ideal construction for a seal that can take a knock. The precision components of a cartridge seal can also be designed as a double seal that fits easily in the same space as a single seal.
The benefits of a split cartridge
Replacing a mechanical seal, component or cartridge usually means dismantling the pump. One way to avoid this is to use a split seal. This seal is split in two, so the parts can be fitted easily without fully dismantling the pump. Recent innovations in sealing technology have led to split cartridge seals that make fitting much simpler. Whether this is the best option for you depends on ease of installation versus cost. The extra cost can pay off in the long run if you need to dismantle the pump often.
Qseals is happy to answer all your questions about cartridge seals
You now have a general picture of what cartridge seals can do. Still, every situation is different, as we know from experience. That is why we are happy to give you tailored advice, so you know which seal best fits your needs. Contact us for a thorough consultation. At Qseals you will find all mechanical seals, such as component seals, cartridge seals and compressor seals. Qseals is also the right place for seal support systems.
