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Trelleborg Sealing Solutions is dedicated to supporting the water industry with globally certified sealing products and materials. Most of our formulations are proprietary and specifically designed to meet the highest product and consumer safety requirements. Our solutions are engineered for high-volume production environments and are available to customers worldwide.

The WaterPro® EPDM family is a comprehensive range of sealing materials designed to withstand the rigors of everyday use. With the rise of chloraminated water systems in US municipalities and the adoption of this trend in European countries, there is a heightened need for robust sealing solutions. Chloraminated drinking water is highly aggressive and standard elastomers often fail to maintain their shape and elasticity under such conditions.

The WaterPro® EPDM family is specifically engineered for these harsh environments. It has been rigorously tested and proven to show only minor deviations in volume and hardness, making it an ideal choice for chloraminated water systems.

 

Download the brochure WaterPro® EPDM Materials – Protecting a Critical Natural Resource With Certified Safety
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Webinar – WaterPro® EPDMs

Trelleborg Sealing Solutions material engineers and food and beverage experts hosted a webinar to introduce these new sealing materials and demonstrate how they meet the requirements of the water industry.
Watch the webinar on-demand

Revolutionary Materials

WaterPro® 557WE
Superior flexibility and adaptability
Exceptional flexibility – For applications requiring low sealing force – Outstanding durability 
WaterPro® 557WG
All-purpose compound
Extremely versatile – Suitable for wide range of applications – Flexible and elastic
WaterPro® 557WM
Durable material for demanding applications
Enhanced abrasian resistance – For high-pressure applications – Withstands wear and tear

Special Features of WaterPro® EPDMs

  • Compression, transfer and direct injection moldable; suitable for O-Rings, static seals and engineered molded parts
  • Excellent compression set resistance
  • Proven for use with drinking water disinfectants chlorine and chloramine
  • Suitable for multicomponent parts, including rubber-to-metal and rubber-to-plastic, for unique seal geometries combining multiple features into a single component
  • Excellent mechanical properties
  • Outstanding resistance to tear and wear
  • Excellent hardness stability at high temperatures
  • Designed to resist swell during immersion in potable water
  • Unique application requirements, for example extra abrasion resistance, can be met with these compounds
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Applications

  • Water heaters
  • Faucets
  • Water treatment
  • Drinking water filtration
  • Smart meters
Approvals

Standards & Certifications

WaterPro® EPDM materials certified to all major drinking water standards globally, including:

  • KTW-BWGL – Cold (+23 °C/+73 °F) to hot (+85 °C/+185 °F), which goes into effect on March 1, 2025
  • W270 (per DIN EN 16421)
  • ACS – Cold, warm and hot applications
  • WRAS – Covers use up to +85 °C/+185 °F
  • NSF 61 – Cold and hot applications