alert icon

Internet Explorer 8 or 9 is not supported by this website. Please use a more up to date browser.

Hide Message hide icon
Swagelok London

Your Authorised Swagelok Sales and Service Centre

Mechanical Seal Support Systems

Seal Support Systems for Pumps and Other Rotating Equipment

Mechanical seals are designed to prevent leakage of fluid from centrifugal pumps that support industrial processes. Mechanical seals depend on mechanical seal support systems for reliable operations. The information below is provided to help explain mechanical seal support basics. It will help to gain a better understanding of mechanical seals and the various types of mechanical seal support systems, their applications, and optional configurations to help boost reliability. 

A mechanical seal is used to contain fluid within a centrifugal pump where the impeller shaft passes through a stationary housing. There is a range of mechanical seal designs to cover every conceivable pumping process; low to high pressure, low to high fluid temperatures, clean plant water to heavy hydrocarbons. To cover that wide range of pumping processes and conditions there is an equally wide range of seal support systems and custom configurations to match the need. 

Your Solutions Provider

With over 70 years of experience in fluid systems, we know about the day to day challenges our customers face. One of these challenges is to keep rotating equipment working reliably, and when maintenance is required to get it done as quickly as possible. To help meet these needs Swagelok has created a new range of Seal Support Products, System and Services aimed at extending the mean time between failure (MTBF) of your pump seals.

DOWNLOAD THE APPLICATION GUIDE download the brochure download the quicklook   request more information 

Configurable. Local. Reliable.

mechanical seal support systems design principles

Mechanical Seals Basics & Design Principles

Learn more about how our configurable, locally available, and reliable systems are better by design.


With our expert knowledge, huge range of components and our design capabilities, there is no solution we can’t provide to meet your needs. Whether you need a complete flush plan that connects straight into your process or a kit of parts for you to install yourself, we can create a bespoke solution for your needs instead of “one size fits all”.


Being local, we have the speed and agility to meet your deadline. 


We keep stock of the seal support system parts locally and they can be with you next day if needed, whether that be an extended male connector, or a kit of parts to build a flush plan.

Flush Plans

We have a team of trained engineers and technicians ready to work with you to design, build and test your flush plan. You can rest assured that when you take delivery, it will work perfectly first time, in fact we are so confident of this we back up every Swagelok built Seal Support System with our Limited Lifetime Warranty. This peace of mind means you can focus on what you need to do to ensure your process is up and running as quickly as possible.

Flush Plans for API 682

Swagelok seal support system designs avoid pipe threads and limit the number of connections wherever possible. Based on the fourth edition, the standard design for each plan includes the minimum arrangement of components as detailed in API 682: Pumps—Shaft Sealing Systems for Centrifugal and Rotary Pumps

Seal Plan Kits

If you just want to order the components under one part number and build the flush plan yourself, you can just buy a Seal Plan Kit (SPK). Each kit contains everything needed for proper installation, including an engineered drawing and also adhere to API best practices by showing technicians where to bend tubing to eliminate potential leak points through the reduction of elbow fittings and pipe threads. 

Learn more about the design principles behind Swagelok seal support systems that make them so reliable and effective.


Four reasons why you can trust Swagelok

  • Our Seal Support Systems are assembled by Swagelok trained and certified installers.

  • The guidelines in our Swagelok Quality System (SQS) ensure a perfect assembly every time.

  • Swagelok's legendary quality and performance is "built-in" to every system.

  • Every flush plan is tested before leaving our facility and is support by our The Swagelok Limited Lifetime Warranty.

Learn more about how our configurable, locally available, and reliable systems are better by design.

Find out how well-designed seal support systems can help you minimize downtime, reduce the probability of leaks, and simplify maintenance.