How to Change Your Filter Press Gasketing: A Step-by-Step Guide

Changing the gasketing on a filter press is a crucial maintenance task that ensures optimal performance and prevents leaks during operation. Over time, gaskets can wear out, become brittle, or lose their effectiveness, leading to inefficiencies in your filtration process. This guide will walk you through the step-by-step process of replacing the gasketing on your filter press plates, ensuring a proper seal and extending the life of your equipment.

Gaskets serve as the sealing component between the filter press plates, preventing leaks and ensuring that the filtration process runs smoothly. If the gaskets are worn or damaged, you may experience leaks, reduced pressure, or even complete system failure. Regular inspection and replacement of gaskets are key to maintaining the efficiency and longevity of your filter press.

• Thin-blade screwdriver
• Razor blade
• Eastman 910 (or similar super glue)
• New gasket material (e.g., EPDM, Teflon, Viton, Buna-N)

• Using a thin-blade screwdriver, carefully remove the old gasket material from the dovetail grooves around the sealing surfaces and discharge eyes of the filter press plates.
• Ensure that all remnants of the old gasket are removed to create a clean surface for the new gasket.

• New O-rings are typically shipped in rolls of 100 feet or more and will not be pre-cut.
• Using a razor blade, cut the first end of the gasket material, ensuring the cut is square. This will allow the ends to butt against each other neatly, preventing gaps.

• Begin installing the new gasket by pushing it into the groove using only hand pressure.
• Be careful not to stretch the gasket material during installation. Stretching can reduce the protrusion of the gasket from the groove, leading to an insufficient seal and possible gaps when the material relaxes.
• Instead, compress the gasket material slightly as you install it to ensure that it remains tight and secure.

• Once the gasket material has been installed all the way around the plate, cut the gasket approximately ½” to 1” longer than required.
• Ensure the cut is square and apply one or two drops of Eastman 910 (or super glue) to one end of the gasket. Quickly join it to the other end, holding the joint under hand pressure for about 30 seconds.

• Crowd the excess gasket material into the groove to ensure fullness and eliminate any gaps.
• Repeat the same procedure for the discharge eye (ring) gaskets, including the bonding of the butted ends.

• Regular Inspections: Regularly inspect your gaskets for signs of wear, delamination, or shredding. Replace them immediately if you notice any deterioration.
• Avoid Excessive Temperatures: Excessive heat can cause the gasket material to harden, leading to cracks and leaks.
• Use the Right Gasket Material: EPDM is a standard gasket material, but depending on your application, other materials like Teflon, Viton, or Buna-N may be more suitable. Always check with the manufacturer to verify the appropriate gasket material for your filter press.
• Initial Use: When new gaskets are first put into use, they may be gummy and prone to pulling out of the grooves when separating the plates. This will resolve itself as product films build up and act as a releasing agent. If necessary, apply a silicone spray during the initial days of operation.

https://www.youtube.com/watch?v=vk8JrCL4KnY 

Regular maintenance of your filter press gasketing is essential for preventing leaks, ensuring efficient operation, and extending the life of your equipment. By following this detailed re-gasketing procedure, you can ensure that your filter press continues to perform at its best. If you are too busy or prefer professional assistance, Met-Chem offers expert services to install new gaskets, ensuring a perfect seal every time.

For more information or to order replacement gaskets, contact Met-Chem Inc. at 216.881.7900 or visit our website at www.metchem.com.

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