Gel Seal HEPA Filter
Different from ordinary rubber gasket HEPA filters with hidden micro-leakage risks, this filter integrates a dedicated silicone gel trough on the frame edge. When installed with a knife-edge ceiling grid or HEPA box housing, the rigid blade sinks into soft non-Newtonian silicone gel to form a fully airtight, self-healing seamless seal, completely blocking unfiltered air bypass. It eliminates particle leakage gaps that cause cleanroom contamination, the only HEPA type approved for GMP on-site PAO aerosol validation of Class 100 laminar flow zones.
Main Structure & Material Breakdown
1. Outer Frame & Gel Trough System
- Frame material: Extruded lightweight aluminum alloy (standard); SUS304 stainless steel upgrade for frequent disinfection medical environments; galvanized steel for general electronics workshops
- Built-in integral blue silicone gel groove around the entire filter perimeter, pre-filled with high-viscosity self-healing polyurethane/silicone gel
- Gel property: Anti-gravity, elastic, self-repairing minor scratches, stable within -20℃ ~ 70℃, no fluid flow under normal airflow pressure, resistant to alcohol and hydrogen peroxide mist
- Matching installation requirement: Must pair with knife-edge ceiling T-grid or HEPA terminal filter box to achieve full sealing effect
2. Mini-Pleat Filtration Core (Standard Mini Plate Structure)
- Filter media: Ultra-fine borosilicate glass fiber (PTFE chemical-resistant media optional)
- H13: ≥99.99% efficiency for 0.3μm MPPS particles
- H14: ≥99.995% efficiency for 0.3μm MPPS (mandatory for pharmaceutical Grade A & hospital operating rooms)
- ULPA U15–U19: ≥99.9995% efficiency for 0.12μm submicron particles for semiconductor ultra-clean zones
- Separator: Hot-melt polypropylene bead strips (no metal aluminum clapboard), uniform narrow mini-pleats expand filtration area, lower pressure drop and avoid fiber shedding
- Internal sealing: Two-component PU glue fully pours and seals media packs to frame, zero internal filter core leakage
3. Auxiliary Components
- Double-sided epoxy coated metal protective mesh: Prevents media scratch during transportation and installation
- Optional reserved differential pressure sampling port & PAO aerosol injection port for on-site GMP validation
- Custom plastic lifting handles for easy tool-free filter replacement
Compliance Standards
- Filtration performance: EN1822:2019 H13/H14/ULPA U15–U19
- Cleanroom classification: ISO 14644-1 (ISO5 Class100)
- Medical & pharmaceutical norms: EU GMP Annex 1, FDA cGMP, HTM03-01 hospital operating room specification
- Quality inspection: IEST RP-CC001 full PAO aerosol leakage scan test
- Material certification: CE, ISO9001, RoHS environmental test
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