What are the regulatory requirements for using a cartridge seal in the food industry?

Jan 19, 2026

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Alex Carter
Alex Carter
As the Chief Technology Officer at Sichuan MONOEL SEALS, I lead our innovation and R&D efforts in developing cutting-edge sealing solutions. With over 15 years of experience in mechanical engineering, I'm passionate about creating sustainable and efficient dynamic seal products for industrial applications.

In the food industry, ensuring product safety and quality is of paramount importance. Cartridge seals play a crucial role in maintaining the integrity of food processing equipment by preventing leakage and contamination. However, the use of cartridge seals in this industry is subject to strict regulatory requirements. As a cartridge seal supplier, understanding these requirements is essential to provide compliant and reliable products to our customers.

Regulatory Bodies and Standards

Several regulatory bodies and standards govern the use of cartridge seals in the food industry. In the United States, the Food and Drug Administration (FDA) is the primary regulatory agency responsible for ensuring the safety of food products. The FDA has established regulations under the Federal Food, Drug, and Cosmetic Act (FD&C Act) that set forth requirements for materials and components used in food contact applications.

One of the key FDA regulations relevant to cartridge seals is 21 CFR Part 177, which lists the substances that are permitted for use in food contact materials. This regulation specifies the types of polymers, elastomers, and other materials that can be used in cartridge seals, as well as the conditions under which they can be used. For example, materials must be non - toxic, non - migratory, and resistant to degradation in contact with food.

In addition to the FDA, the European Union (EU) has its own set of regulations for food contact materials. The EU's Regulation (EC) No 1935/2004 lays down the general principles and requirements for materials and articles intended to come into contact with food. It requires that food contact materials be safe, not transfer their constituents to food in quantities that could endanger human health or change the composition of the food.

Material Requirements

The materials used in cartridge seals for the food industry must meet specific criteria to ensure compliance with regulatory requirements.

Elastomers

Elastomers are commonly used in cartridge seals for their sealing properties. FDA - approved elastomers for food contact applications include nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), and fluorocarbon rubber (FKM). These elastomers must be free from harmful additives such as heavy metals, phthalates, and other toxic substances.

For example, EPDM is often used in food processing equipment due to its excellent resistance to water, steam, and a wide range of chemicals. It is also non - toxic and has good sealing performance at different temperatures. When selecting an elastomer for a cartridge seal, it is important to ensure that it is compliant with both FDA and EU regulations.

Polymers

Polymers used in cartridge seals, such as PTFE (polytetrafluoroethylene), must also meet regulatory standards. PTFE is a popular choice for its chemical resistance and low friction properties. However, it must be produced in a way that ensures it is free from contaminants. Some PTFE materials may be treated with additives to improve their performance, but these additives must be approved for food contact use.

Metals

Metals used in cartridge seals, such as stainless steel, are subject to strict quality control. Stainless steel grades such as 316L are commonly used because they are corrosion - resistant and do not leach harmful substances into food. The surface finish of the metal is also important, as a smooth surface reduces the risk of bacterial growth and makes cleaning easier.

Design and Construction Requirements

The design and construction of cartridge seals in the food industry must be carefully considered to meet regulatory requirements.

1(3)FFGD Single Cartridge Mechanical Seal For Suler MSD Pump

Easy to Clean

Cartridge seals should be designed to be easy to clean and sanitize. This means that they should have smooth surfaces, no crevices or dead spaces where food particles can accumulate, and be designed in a way that allows for thorough cleaning with standard cleaning agents. For example, a cartridge seal with a simple, modular design is easier to disassemble and clean compared to a complex design.

Hygienic Design

Hygienic design principles should be applied to the construction of cartridge seals. This includes using rounded edges, avoiding sharp corners, and ensuring that all components are securely fastened to prevent the ingress of contaminants. The seal should also be designed to prevent the formation of biofilms, which can harbor bacteria and other microorganisms.

Compatibility with Cleaning Processes

Cartridge seals must be compatible with the cleaning processes used in food processing facilities. This includes resistance to high - pressure cleaning, chemical cleaning agents, and steam sterilization. For example, seals must be able to withstand the temperature and chemical exposure during a CIP (Clean - in - Place) process without degrading or losing their sealing properties.

Documentation and Traceability

As a cartridge seal supplier, providing proper documentation is essential. This includes material safety data sheets (MSDS) that detail the composition and properties of the materials used in the seals. The MSDS should clearly state that the materials are compliant with relevant regulatory requirements.

Traceability is also important. We should be able to provide records of the source of raw materials, manufacturing processes, and quality control checks. This allows our customers to demonstrate compliance with regulatory authorities in case of an audit.

Our Product Offerings

At our company, we offer a range of cartridge seals that are specifically designed for the food industry and meet all relevant regulatory requirements. For example, our MOR 5840 Cartridge Slurry Seal is made from high - quality materials that are FDA and EU compliant. It has a hygienic design that makes it easy to clean and is compatible with common food processing cleaning agents.

Our MOR 523 LIGHTNIN spring seal is another product that is suitable for food industry applications. It is designed with a focus on durability and sealing performance, while also meeting the strict regulatory requirements for food contact materials.

In addition, our FFGD Single Cartridge Mechanical Seal For Suler MSD Pump is engineered to provide reliable sealing in food processing pumps. It is made from materials that are resistant to corrosion and degradation, ensuring long - term performance in a food - safe environment.

Contact Us for Procurement

If you are in the food industry and are looking for high - quality, regulatory - compliant cartridge seals, we invite you to contact us for procurement. Our team of experts can assist you in selecting the right cartridge seal for your specific application, and we can provide all the necessary documentation to ensure compliance with regulatory requirements. We are committed to providing the best products and services to our customers in the food industry.

References

  1. Federal Food, Drug, and Cosmetic Act (FD&C Act), United States.
  2. 21 CFR Part 177, United States Food and Drug Administration.
  3. Regulation (EC) No 1935/2004, European Union.
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