Case Study: High-Performance Seals for Industrial Food Processing Equipment

Ergoseal's work with this manufacturer spans two distinct but related sealing challenges, both with demanding performance requirements and no off-the-shelf solutions available.

For their food processing machinery, the existing seals presented compounding problems:

• Service life considerations: The operating environment — including heat and moisture exposure — created opportunities to improve seal longevity and reduce replacement frequency
• Contamination risk: Existing designs presented opportunities for improvement in preventing food particle infiltration into equipment components.
• Maintenance efficiency: The application required a seal design better suited to rapid sanitation cycles to minimize downtime and support hygiene compliance.
• Regulatory requirements: Any replacement solution needed to meet FDA food safety material standards without compromise.

For their high-speed food grinders, the challenge was even more technically constrained. At exceedingly high shaft speeds, a replacement mechanical face seal had to simultaneously:

• Prevent oil migration: Maintain sufficient contact force to keep food-grade lubricating oil out of the food processing area.
• Control heat generation: Avoid excessive friction that could cause oil smoking and contamination of the cut product — a direct food safety concern.
• Retrofit precisely: Fit within existing dimensional constraints with features for sanitary conformance and proper fixation and drive, requiring no redesign of surrounding equipment.

Ergoseal approached both programs as true engineering partnerships — working hands-on with the customer's team, iterating on design and materials, and bringing multiple technologies to bear to find the right solution for each application.

PTFE Spring-Energized Lip Seal — Food Processing Equipment

Ergoseal designed a custom PTFE spring-energized lip seal tailored specifically to the thermal, sanitary, and regulatory demands of the application:

• High-temperature resistance: Proprietary materials engineered to withstand sustained heat exposure without degradation.
• Contamination prevention: Geometry and material selection optimized to form a secure barrier against food particle infiltration.
• Sanitation-friendly design: Configured for quick, thorough cleaning cycles to minimize downtime and support hygiene compliance.
• FDA-compliant materials: All materials selected to meet food safety regulations while maintaining long-term durability.

Custom Mechanical Face Seal Program — High-Speed Processing Equipment

For the high-speed processing equipment application, Ergoseal undertook a multi-iteration development program to zero in on a solution meeting the full set of performance requirements:

• Initial design (Rev 0): The first mechanical face seal sample effectively controlled leakage but ran warmer than the customer's temperature target, prompting further investigation.
• Iterative refinement: Subsequent revisions incorporated reduced spring loading, alternative face material combinations, and geometry modifications — each bringing operating temperatures measurably closer to target. FEA simulation specific to mechanical face seals was used throughout to model contact pressure and thermal behavior before committing to hardware.
• PTFE lip seal parallel path: Drawing on Ergoseal's in-house manufacturing capabilities, a PTFE lip seal alternative was developed alongside the face seal program — offering a fundamentally different sealing approach for comparative evaluation.
• On-site collaboration: Ergoseal made multiple visits to the customer's facility to support validation testing, review results firsthand, and work directly with their engineering team on next steps.

Every design across both programs was custom-engineered for retrofit fit, with material selection and features tailored to the specific application — not adapted from catalog items.

Both development programs remain active, with the most recent seal iterations currently undergoing customer validation testing. Progress across both tracks demonstrates consistent improvement, and the broader partnership continues to grow.

• Extended service life: Improved PTFE material performance reduces seal wear and replacement frequency, extending service intervals.
• Reduced contamination risk: The new designs provide reliable protection against food infiltration, supporting FDA and industry compliance.
• Improved operational efficiency: Sanitation-optimized designs reduce cleaning downtime and equipment turnaround time.
• Iterative thermal improvement: Each revision of the mechanical face seal has moved closer to the customer's operating temperature target, validated by both physical testing and FEA simulation.
• Dual-technology optionality: Developing both a refined mechanical face seal and an in-house PTFE lip seal in parallel gives the customer options and reduces program risk.
• Growing platform adoption: The sealing solution is being evaluated for implementation across multiple equipment models in the customer's product line — and the manufacturer is actively exploring additional applications for Ergoseal's engineered seals.

Looking for a custom-engineered sealing solution? Contact our team today to learn how Ergoseal can help optimize performance and compliance in your industrial equipment.