O-Rings, Gaskets & Seals for the Packaging Industry

What are Packaging Industry Materials?

Packaging industry materials are engineered elastomers, plastics, metals, and composite materials specifically selected to withstand the demanding operating conditions found in automated packaging and processing equipment. These materials are commonly used in O-rings, gaskets, seals, tubing, rollers, wear strips, diaphragms, conveyor components, and custom molded or machined parts.

Many packaging applications require materials capable of handling aggressive cleaning chemicals, washdown environments, repetitive movement, food contact exposure, vacuum pressure, and continuous mechanical wear. Depending on the application, materials may also require FDA compliance, USP Class VI compliance, NSF certification, or resistance to oils, greases, flavoring agents, and food byproducts.

Common Considerations

Food Safety & Regulatory Compliance

Many packaging applications require FDA compliant, USP Class VI, NSF, or 3-A sanitary materials to ensure safe contact with food, beverages, pharmaceuticals, or medical products. Material traceability and compliance documentation are often critical for regulated industries.

Wear Resistance

Packaging systems often operate continuously at high speeds, exposing components to constant abrasion, friction, vibration, and repetitive cycling. Wear-resistant materials help extend maintenance intervals and reduce downtime.

Compression Set Resistance

O-rings and gaskets used in packaging systems must maintain long-term sealing force despite continuous compression, thermal cycling, and repeated operation. Compression set resistance is especially important in vacuum systems, pneumatic equipment, and washdown environments.

Chemical Compatibility

Packaging equipment is frequently exposed to cleaning agents, oils, lubricants, flavoring compounds, food byproducts, sanitizers, and process chemicals. Proper material selection is critical for preventing swelling, cracking, hardening, or premature seal failure.

Temperature Resistance

Packaging systems may operate in refrigerated, ambient, elevated temperature, or steam-cleaning environments. Materials must maintain sealing performance throughout the full operating temperature range.

Vacuum & Pneumatic Performance

Vacuum packaging systems and pneumatic automation equipment require sealing materials capable of maintaining reliable sealing performance under pressure cycling and continuous operation.

Noise & Vibration Reduction

Packaging equipment commonly operates at high speeds, creating vibration and operating noise. Properly selected materials can help reduce vibration transfer, improve equipment stability, and lower operating noise.

Key Standards

FDA CFR 21.177.2600

FDA compliant elastomers and plastics are commonly used in food processing and packaging systems where materials may come into direct or indirect contact with food products. FDA compliant O-rings, gaskets, tubing, and seals are frequently used in filling systems, mixers, pumps, conveyors, and processing equipment.

USP Class VI

USP Class VI materials are commonly used in pharmaceutical and medical packaging systems requiring high purity and biocompatibility. These materials undergo testing to verify suitability for sensitive medical and pharmaceutical environments.

NSF 51

NSF 51 applies to materials used in food equipment and food contact applications. O-rings, gaskets, seals, and tubing used in food processing systems may require NSF 51 compliance depending on the application.

3-A Sanitary Standards

3-A sanitary standards are commonly specified for food, dairy, and beverage processing systems requiring hygienic design and cleanability. Sanitary gaskets and seals are frequently used in these systems.

FDA & USP Class VI Silicone

Silicone materials are widely used in packaging systems due to their temperature resistance, flexibility, and availability in FDA and USP Class VI grades. Silicone O-rings, tubing, and gaskets are especially common in food processing and pharmaceutical equipment.

PTFE & Low Friction Materials

PTFE and other low-friction materials are commonly used in guide rails, wear strips, seals, and conveyor components where reduced friction and chemical resistance are important.