Gel Seal HEPA Filter is a high-efficiency air purification device that achieves ultra-high airtightness through flexible gel sealing technology. It is designed for scenarios with almost stringent requirements on air leakage rate, such as biosafety laboratories, pharmaceutical clean rooms, and semiconductor manufacturing. Its core is to completely eliminate the risk of frame leakage by replacing traditional adhesive or gasket sealing with gel materials, ensuring EN 1822 H13-H14 or ISO 16890 ePM1 99.95%-99.995% filtration efficiency, becoming a benchmark solution for ultra-clean environment air treatment.
Core structure and technological breakthroughs
Gel sealing technology
Material properties:
Silicon-based gel: temperature resistance -50℃ to 200℃, anti-aging, anti-chemical corrosion (pH 3-10), lifespan up to 10 years without hardening;
Adaptive filling: After the gel is compressed, it flows to fill the micro-gap between the frame and the installation slot, achieving 100% leakage-free (leakage rate ≤0.001%).
Sealing process:
The filter element frame is pre-set with a gel slot. During installation, the gel is squeezed and evenly extended to adapt to irregular contact surfaces;
Removable and re-sealed (limited to specific models), supporting gel reuse after filter element replacement.
High-efficiency filter element design
Filter material:
Glass fiber filter paper: resistant to high temperature sterilization (≤350℃), excellent moisture resistance, suitable for biological safety cabinets and sterile workshops;
Electret polyester fiber: electrostatic adsorption enhances the capture of 0.1μm particles (MPPS efficiency ≥99.99%), and the initial pressure difference is ≤150Pa.
Frame:
Aviation aluminum or stainless steel frame, anodized or sprayed surface, corrosion-resistant;
Modular quick-install design, supports tool-free installation and removal.
Core performance parameters
Parameters Performance indicators
Filtration efficiency 0.3μm particle interception rate ≥99.97% (H13) to ≥99.995% (H14)
Leakage rate ≤0.001% (PAO/DOP method test, much higher than ISO 14644-1 Class 5 requirements)
Initial pressure difference ≤150Pa (@ rated air volume), energy consumption is 20% lower than traditional HEPA
Dust holding capacity 120-400g/m² (depending on thickness and pleat density)
Environmental resistance Temperature -50℃~200℃, humidity ≤95% RH, anti-disinfectant (such as hydrogen peroxide)
Four core advantages
Zero leakage guarantee:
Gel sealing completely eliminates the risk of frame leakage, meets the stringent requirements of ISO Class 3 (Class 10) clean rooms, and avoids cross contamination.
Ultra-long life:
Gel anti-aging properties + reusable seal design, filter life of 5-8 years, sealing system life ≥ 10 years.
High efficiency and energy saving:
Low initial pressure difference + leak-free design, system energy consumption reduced by 20%-30%, comprehensive operation and maintenance costs reduced by 40%.
Flexible adaptation:
Support customized size (300mm×300mm to 1500mm×800mm) and corrosion-resistant frame (such as 316L stainless steel).
Typical application scenarios
Biosafety and medical:
BSL-3/4 laboratories, cell therapy centers, to ensure zero leakage of viral aerosols;
Sterile preparation filling line, passed FDA 21 CFR Part 11 compliance certification.
Semiconductor and optics:
EUV lithography machine environmental control to prevent nano-level metal dust pollution;
Quantum computer manufacturing workshop, maintain ultra-clean electromagnetic shielding environment.
Pharmaceutical and food:
Vaccine freeze dryer, isolator exhaust system, prevent active ingredients from leaking out;
Infant formula milk powder production line, intercept microorganisms and foreign matter.
Selection and maintenance guide
Selection points
Cleanliness level:
ISO Class 3 (class 10): H14 + 316L stainless steel frame;
ISO Class 5 (class 100): H13 + aviation aluminum frame.
Working condition adaptation:
High temperature sterilization: select glass fiber filter material + high temperature resistant silicone gel (200℃);
Chemical disinfection: select anti-corrosion gel (such as fluorosilicone) + coating frame.
Intelligent maintenance
Sealing status monitoring:
Integrated pressure difference and leakage sensor, real-time feedback on sealing integrity;
AI algorithm predicts gel aging cycle, early warning maintenance.
Filter element replacement:
After removing the old filter element, clean the residual gel and re-inject new gel (can be repeated 3-5 times);
Standard replacement cycle 5-8 years (can be extended in low load environment).
Industry breakthroughs and future trends
Self-healing gel: automatically repairs micro cracks after damage, extending the life of the sealing system to 15 years;
Smart gel: conductive gel monitors sealing pressure in real time, and data is directly connected to the building management system (BMS);
Green materials: biodegradable gel (starch-based), reducing carbon footprint by 50%.
Gel-sealed HEPA filters redefine the ultra-clean environment air management standards with “zero leakage, ultra-durability, and intelligent controllability”, becoming the ultimate guardian of life sciences, cutting-edge manufacturing, and medical safety. From virus research to chip lithography, it breaks through traditional boundaries with innovative sealing technology, providing a cornerstone for pure air for human exploration of unknown areas.
