Which two types of gasketing are used for HEPA filters?

The use of closed cell neoprene and non-Newtonian gel seals for gasketing HEPA filters is particularly effective due to their resilience and excellent sealing properties. Closed cell neoprene is a material that provides a robust and durable solution. Its closed-cell structure helps prevent airflow leakage, which is crucial for maintaining the efficiency and performance of HEPA filters. This type of gasket ensures that air passing through the filter is adequately filtered without bypassing, which is essential for maintaining air quality standards in applications such as clean rooms, laboratories, and healthcare facilities.

Non-Newtonian gel seals, on the other hand, offer unique benefits since they can adapt to the surface they are sealing against. This adaptability allows for a more uniform sealing contact and helps in compensating for any irregularities on the mounting surface of the filter housing. The result is a tighter seal that further minimizes the risk of unfiltered air entering the clean airflow, which is vital for the effective operation of HEPA filters.

These materials are selected specifically for their performance in demanding applications where maintaining high filtration efficiency is critical, particularly when it comes to airborne contaminants and particulate matter.