How hygienic design drives operational performance in pharmaceutical production
In the pharmaceutical industry, the mechanical seal serves several purposes. It manages sterile production, supports high-purity formulation, prevents contamination and protects everything and everyone from emissions.
The mechanical seal supports batch manufacturing operations and equipment functionality throughout every process, using each piece of equipment to best effect. The seal meets regulatory standards, including Food and Drug Administration (FDA) and Good Manufacturing Practice (GMP) guidelines, such as (EU Annex 1).
Designed to maximise uptime
The regulatory influence of these bodies, and the ISO (International Organisation for Standardisation), performs two key functions. It sets the bar for hygienic processes while simultaneously acting as an operational constraint. What operators need is compliant seal designs that translate directly into efficient operating practices.
Equipment design work must align with pharmaceutical good manufacturing practice (GMP) principles, ensuring products meet predefined quality standards built into each stage. Equipment, therefore, must be suitable for its intended use and consistently perform as required, including preventing contamination and allowing effective cleaning.
Meeting the standard
Mechanical seal design directly influences reliability, repeatability and the sustainability of the operation. That means more than just compliance. Validation and repeatability are as important as performance limits, and seal design underpins them, playing a strategic role in supporting pharmaceutical success.
European Hygienic & Design Group (EHEDG) guidelines clarify the design considerations required for a hygienic, risk-based approach to process containment, preventing product contamination and maintaining product and environmental integrity for each operation, in every application, every single day.
In complex pharmaceutical systems, the mechanical seal has two key roles. Primarily, it controls the support fluids and gases used to manufacture, purify and package products, as well as supporting granulation, drying and cooling operations. The secondary function is to maintain the inert environments that prevent product degradation and contamination. Two key metrics can help:
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Instrumentation: The science of measuring and controlling physical process variables (such as pressure, temperature, level and flow) in industrial systems to improve safety and efficiency.
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Maintenance intervention: A good hygienic design results in fewer incidents and avoids taking the process offline for essential repair work or other interventions.
Sustainability – an opportunity or another challenge?
As most manufacturing organisations know, sustainability is an operational issue for every part of the process. The key to achieving sustainability goals is to regard them as closely aligned with other goals. In short, less downtime supports the business by meeting commercial and Environmental, Social, and Governance (ESG) goals.
For example, choosing repairable seal designs across the plant will reduce downtime by eliminating the need to wait for the delivery and installation of a replacement.
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Downtime reduction. Reducing wasted energy and resources by deploying the right sealing solution for the product – a pharm-specific design – will also create more efficient processes as a sustainability bonus.
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Use of certified materials to extend asset life. The right material for the sealing solution reduces degradation during Clean-in-Place (CIP) and Sterilise-in-Place (SIP) cycles, helping to avoid premature replacement.
Working sustainably means improving operational performance over the entire lifecycle, with less downtime, while extracting new value from existing technology investments.
In the next part of the blog, we look at how vessel seal design supports better pharmaceutical processing, the key role played by filtration, CIP filter elements and how a robust sealing strategy supports business and sustainability success.