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Elasto Proxy's Sealing Solutions Blog Blog

Elasto Proxy's Sealing Solutions Blog

Elasto Proxy's Sealing Solutions Blog is the place for conversation and discussion about the design and custom fabrication of rubber and plastic components. For nearly 25 years, our family-owned company has provided high-quality, low-volume seals to a variety of industries. Doug Sharpe, Elasto Proxy's co-founder, is a former president of the International Sealing Distribution Association (ISD), a not-for-profit trade association that enhances member success through information, education, and interaction. By blogging for CR4 in this same supportive and collaborative spirit, Doug and other members of the Elasto Proxy team will share our experiences with you.

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Rubber Gate Seal for Water Filtration System Lasts Longer, Resists Disinfection, Adds Business Value

Posted October 23, 2017 7:20 PM by Doug Sharpe

When a manufacturer of water filtration systems needed a rubber gate seal that would last longer and resist ultraviolet (UV) light, Elasto Proxy provided a value-added solution. This custom gasket doesn’t just resist exposure to water, contact with metal and concrete, and disinfection with UV light. The gate seal also supports ease-of-installation and is ready to ship from Elasto Proxy’s warehouse in Newmarket, Ontario.

The 60-durometer EPDM lip seal (J-seal) that Elasto Proxy provides attaches to the bottom of a metal gate used in water treatment facilities. This rubber seal is also compressed against hard concrete floors and exposed to a range of temperatures. UV disinfection kills waterborne microbes that can make people sick, but ultraviolet light can also degrade rubber materials. Without reliable sealing and strong bonding, gaskets like this can’t meet business or technical requirements.

To provide a complete sealing solution, Elasto Proxy leveraged its expertise in seal design, material selection, custom fabrication, warehousing, and logistics.

Design Assistance and Material Selection

Elasto Proxy’s first task was to analyze the design of the customer’s current seal, a large P-shaped profile made of natural rubber. At nearly 2-inches high and 4-inches wide, this gate seal was especially thick. To promote compression, the gasket had a hollow center yet still required a significant amount of force. The profile’s corners were probably joined with cold-bonding, a splicing method that’s better suited for gaskets that won’t be exposed to high temperatures or outdoor environments.

Next, Elasto Proxy’s technical team analyzed requirements from the U.S. Food and Drug Administration (FDA) and determined that natural rubber wasn’t required for this application. This was an important discovery since EPDM rubber offers greater resistance to UV light. The J-seal that Elasto Proxy recommended also provided the right hardness and shape to support compression resistance.

Custom Fabrication, Warehousing, and Logistics

After replacing the P-shaped profile with a lip seal and recommending EPDM instead of natural rubber, Elasto Proxy applied its custom fabrication expertise. To produce a pattern of bolt holes for attaching the rubber seal to a metal gate, Elasto Proxy used water jet cutting to make fine, fast, precise cuts. To produce strong bonds and support the lip seal’s large size, infrared (IR) splicing was used. Among its many advantages, IR splicing is faster than cold bonding and less expensive than molding.

Next, the custom rubber seals that Elasto Proxy crafted were subjected to rigorous in-house testing by the manufacturer of water filtration systems. Today, Elasto Proxy holds the customer’s seals in stock and ships them according to annual usage. Quick turnaround time meet the customer’s needs, and there are now over 50 other sizes that incorporate our custom-fabricated profile.

Find Your Sealing Solution

Do you have questions about rubber gate seals for water filtration systems? Would you like to learn how Elasto Proxy can solve your sealing challenges through better design, material selection, custom fabrication, and logistics? To get starts, contact us.


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