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Air Filters and Chemical Filtration
HEPA Filter Compression Gasket
A continuous closed-cell elastomer gasket that compresses between the HEPA frame and housing flange to stop perimeter air bypass.
- Closed-Cell Construction
- Controlled Compression
- Continuous Corner Joint
- Multiple Elastomer Grades
Product Introduction
The compression gasket is bonded to the upstream or downstream face of a HEPA frame and seals against a flat housing flange. Closed-cell polyurethane, neoprene, EPDM or silicone limits air transmission through the foam itself, while the selected hardness lets the gasket recover after clamping. Mitered, vulcanized or moulded endless corners remove gaps at the perimeter. Adhesive backing holds the profile in position during filter installation.
Key Features
Defined thickness and hardness provide a predictable compression window.
Endless or sealed mitered corners eliminate open butt joints.
Pressure-sensitive adhesive keeps the profile aligned on the filter frame.
Customer Product Concerns
Perimeter leakage can remain even with an efficient filter if the gasket is porous, misaligned or unevenly compressed.
Open-cell foam allows air to pass through the gasket body.Closed-cell polyurethane, neoprene or silicone forms a substantially less permeable seal.
A butt joint opens at the frame corner.Moulded endless or sealed mitered construction closes the entire perimeter.
Over-tightening permanently flattens the gasket.Specified hardness and clamp travel keep compression within the elastic recovery range.
The strip moves out of position while the filter is inserted.A continuous adhesive backing fixes the gasket to the cleaned frame surface.
Typical Applications
Gasket-seal HEPA filtersAbsolute filter holding framesSide-access filter housingsCleanroom terminal boxesReplacement filter-bank seals
Technical Parameters
Common material and dimensional ranges for HEPA compression gaskets are listed below.
| Core Material | Closed-cell polyurethane, neoprene, EPDM or silicone elastomer foam |
|---|---|
| Panel Thickness | 5–12 mm uncompressed gasket thickness |
| Effective Width | 12–25 mm gasket strip width |
| Maximum Length | Up to 5000 mm continuous coil or custom endless perimeter |
| Steel Facing Thickness | 0.05–0.15 mm reinforced pressure-sensitive adhesive carrier where used |
| Core Density | 80–250 kg/m³ closed-cell foam density |
| Thermal Conductivity | 0.04–0.08 W/(m·K) depending on elastomer grade |
| Surface Finish | Smooth black, grey or white closed-cell skin with adhesive backing |
| Joint Type | Moulded endless loop or sealed 45-degree miter joints bonded to the filter frame |
| Customization | Available based on the intended application and operating environment. |
Available Options
Polyurethane, neoprene, EPDM or siliconeSelf-adhesive strip or moulded loopFlat or hollow profileCustom die-cut frame gasket
Planning a HEPA Filter Compression Gasket specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
