Special Sealing Products
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Innovative Sealing Developments for more Hygiene, Safety and Predictive Maintenance

Special Sealing Solutions for the Food & Beverage Industry

Special Sealing Solutions are customized solutions with special geometries or application requirements. As they are always individually designed and produced, you need a sealing solutions expert with excellent material, product and application know-how. Freudenberg Sealing Technologies is the top innovator in the field, providing you with the maximum technical competence in consulting, engineering and manufacturing.

Contact our experts and discuss your individual needs.

70 EPDM 291

70 EPDM 291
Optimized temperature and media resistance combined with tested safety

70 EPDM 291 was specially developed for the high demands of the process industry and belongs to Freudenberg Sealing Technologies’ premium materials for food and beverage applications. The material offers a temperature range from -58 °F to +302 °F. Water vapor, CIP/SIP cleaning media and many other aggressive media are no problem for 70 EPDM 291. In terms of legal regulations, 70 EPDM 291 complies to various standards, such as EG (Reg.) 1935/2004, FDA (Food and Drug Administration), 3-A® Sanitary Standards or NSF 61. Another highlight is that the material is suitable for many different products – from O-rings and clamp seals to radial shaft seals.

Product Benefits

  • Wide temperature range of up to +302 °F
  • Resistance to different chemicals, water vapor and CIP/SIP cleaning media
  • Compliance with different legal standards, such as EG (Reg.) 1935/2004, FDA, 3-A® Sanitary Standards, NSF 61
  • Suitable for different product categories, such as O-rings, clamp seals or radial shaft seals
O-Ring white thin

70 EPDM 38596
New White High-Performance Material for the Process Industry

The new white high-performance material 70 EPDM 38596 from Freudenberg Sealing Technologies has been developed especially to meet the high demands of the process industry. The material is extremely well suited for manufacturing O-rings and sealing rings with simple cross-sections. It not only has excellent mechanical properties, but also very good resistance to standard cleaning media and steam. It is particularly well suited for contact with aqueous products and dairy products with a low-fat content. The very low extractables values are also an advantage that the material 70 EPDM 38596 offers.

Product Benefits

  • Reliable certification according to EU (Reg.) 1935/2004, EU (Reg.) 2023/2006 and FDA
  • Very good material for O-rings and sealing rings with simple cross-sections
  • Excellent mechanical properties
  • Very good resistance to standard cleaning media, which is why it shows similar to very good comparable resistance to the very proven black material 70 EPDM 291.
  • Excellent temperature resistance in steam (up to +160 °C)
  • Very low extractables values

Download Flyer "New white high-performance material for the process industry"  ›

HNBR

HNBR Materials for the Food and Beverage Industry

With the help of extraction tests, Freudenberg Sealing Technologies has tested and certified some of its HNBR materials according to the European EU (Reg.) 1935/2004 as well as the US-American FDA. They can now be used in food and beverage plants without any concerns; also in direct contact with the end product. Additionally, these sealing materials are resistant to CIP/SIP and fatty media. As usual for HNBR materials, they are especially suitable for applications with high mechanical stress. They are available for O-rings and customer-specific parts – also hygienically designed.

Product Benefits

  • Reliable certification according to EU (Reg.) 1935/2004 and FDA
  • Resistance to CIP/SIP and fatty media
  • Very good physical resilience
  • Hygienic design
  • Available as customized sealing products

Product Examples

  • O-rings made from 85 HNBR 181071 and 75 HNBR 231142
  • Customer-specific parts made from 70 HNBR 254067, 75 HNBR 253436, 85 HNBR 216553 and 85 HNBR 181071
Hygienic Portfolio

New Product Line for Hygienic Plants in the Process Industry

Cleanliness, hygiene, conformity and durability – the process industry poses a variety of challenges to seals. They must have a high degree of purity and comply with hygienic design standards. With the new product line for hygienic plants in the process industry, Freudenberg Sealing Technologies offers a unique product portfolio for hygienic applications. This includes not only the Hygienic Pressure Seal and Hygienic Forseal, which are made of the premium PTFE Quantum®, but also dead-space-free radial seals for seat valves, radial shaft seals such as the Radiamatic® HTS II 9539 VL with an advanced sealing lip, shaft seals, butterfly valve sealsHygienic Usit® rings, clamp seals with support ring and aseptic O-rings.

Hygienic Pressure Seal

The Hygienic Pressure Seal is the optimal solution for applications where high temperatures and pressures prevail. The combination of the high-performance elastomers Fluoroprene® XP or EPDM and the premium PTFE Quantum® makes this product absolutely unique.

Product Benefits

  • Prevention of dead space by a flat contact surface to the process medium
  • Low friction, reduced wear and increased service life
  • Resistant to high pressures up to 150 bar
  • Secure fit and minimum contact surface with the medium
  • Good dry running properties
  • High media and temperature resistance

Hygienic Forseal

The Hygienic Forseal is a combination of a groove ring made of the premium PTFE Quantum®, activated by a pressure ring made of Fluoroprene® XP or EPDM.

The Main Benefits for You

  • Replacement of the conventional stainless-steel spring with dead space due to the principle by an elastomer pressure element
  • Flat contact surface to the process medium prevents dead space
  • Low friction, reduced wear and increased service life
  • Good dry running properties
  • High media and temperature resistance
  • Mounting in undivided installation space possible
  • Customer-specific designs, such as a double seal and an anti-rotation device possible

Download Brochure  ›

Low pressure profiles

Low-Pressure Profiles

Freudenberg Sealing Technologies offers extremely robust, high-quality, low-pressure profiles. They are resistant to high temperatures, cleaning agents and other media such as water, steam, disinfectants, alkali solutions and acids. Longevity and resilience are the most important characteristics of our profiles. For instance, they ensure that a dispenser door can be smoothly opened and closed without damaging the seal.

Product Benefits

  • Highly media- and temperature-resistant
  • All relevant food and beverage material certifications
  • Longevity and resilience
  • Special vulcanization process for optimized joint quality
  • Individual dimensions possible

Download Profiles and Inflatable Seals  ›

Monitored Seals

Smart Seals

Freudenberg Sealing Technologies’ monitored seals open up the possibility of predictive maintenance, making it possible to proactively prevent leaks as well as avoid the premature replacement of a still-functioning product by mistake – all with the careful monitoring of the seal’s condition. The special seal becomes a sensor. It can measure its own level of wear and send the data as an electrical impulse to a monitoring system.

Product Benefits

  • Using the seal over its optimal lifetime
  • Predictive maintenance
  • Real-time performance measurement
  • Seal acts as a sensor
  • Characteristics that go far beyond the sealing function
Precision Molded Parts

Customer-Specific Parts

Flavor transfer, leakage due to compatibility problems and missing certifications are well-known challenges in the food and beverage industry. Precision-molded parts from Freudenberg Sealing Technologies solve all of them with their high-performance materials with the right certifications. They are resistant to water, CO2, dairy products, CIP/SIP media and syrup. In addition, specialists offer professional consulting on these issues.

Product Benefits

  • Highly media- and temperature-resistant
  • All relevant food and beverage material certifications
  • Outstanding material, product and application know-how
  • Individually designed components
  • Components prevent flavor transfer
Food conforming material

Food Conforming Materials for Global Use

Since 2016, China has had its own requirements for the food and beverage industry: GB 4806 and GB 9685. Freudenberg Sealing Technologies has developed special sealing materials that comply not only with these new standards, but also with global requirements such as those issued by the American FDA (Food and Drug Administration) or the European EU (Reg.) 1935/2004. Currently the portfolio includes EPDM-compounds (75 EPDM 386, 70 EPDM 382, 85 EPDM 387, 60 EPDM 217952, 70 EPDM 217937), silicones (70 VMQ 117055, 60 VMQ 117117) and plastics such as PTFE V037, Polyamide 12G 37599 and Polyethylene E083. We are happy to support you and your business partners in China with your individual requirements.

Product Benefits

  • Global compliance with food and beverage industry requirements
  • Many tested and certified materials
  • Production possible with Freudenberg Xpress®

Download Flyer Food Conforming Materials for Global Use

CR Guide

CHEMICAL RESISTANCE GUIDE

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