Freudenberg Sealing Technologies is expanding its sealing portfolio for hygienic systems in the process industry to include two new products: Hygienic Forseal and Hygienic Pressure Seal. Both are specially developed for food applications that experience high pressures and temperatures. The unique combination of high-performance elastomers (EPDM or Fluoroprene® XP) and premium PTFE materials (Quantum®) also makes the seals resistant to a wide range of aggressive media.
Based on the proven Forseal from Freudenberg Sealing Technologies, the new hygienic version features a design that has been adapted to the extreme conditions and requirements of the food industry. While the classic version of the Forseal uses a steel spring to ensure contact pressure, the hygienic solution uses an elastomer ring. Also, the Hygienic Forseal offers a flat surface to the product medium and has no undercuts whatsoever in terms of hygiene. The assembly is possible in an undivided installation space. The high-performance, low-wear Quantum® PTFE used also has the usual industry-specific approvals for food and beverage applications, in contrast to the standard material of the proven Forseal. Double seals, anti-rotation devices, and many other customized adaptations are possible.
The Hygienic Pressure Seal can be used as a rod seal in valves or pumps, for example. The contact element consists of the high-performance Quantum® PTFE combined with an elastomeric pressure ring. It complies with the same high hygiene standards as the classic version but offers improved performance: very good pressure resistance up to 150 bar, excellent friction values, extended service life, and a design without dead space. Furthermore, it has good dry running properties.
