Gel Seal HEPA Filter is upgraded sealed high-efficiency particulate air filter developed for high-grade cleanroom, medical purification, electronic workshop and ceiling embedded air duct ventilation systems. Different from traditional gasket sealed HEPA filters with easy air leakage risk, this product innovates integral frame gel groove structure filled with special polyurethane gel sealant. The gel keeps non-flowing and non-hardening permanent elastic state, no aging cracking or shrinkage in long-term operation. Matched industry-standard knife-edge filter housing, the sharp knife edge can be fully inserted and submerged into gel cavity to form seamless airtight isolation, completely eliminating side air leakage to guarantee whole-system filtration efficiency. It has two mainstream structural types: standard Gel Seal filter with front-side gel groove (80mm frame depth), Reverse Gel Seal filter with back upstream gel groove (75mm,93mm frame depth). Reverse gel structure enables the filter embedded deeper into air duct housing to reduce occupied installation space, and supports filter disassembling and maintenance from indoor room side without pipeline dismantling.
Adopt full industrial-grade configuration: anti-corrosion anodized aluminum frame, high-precision wet-laid microfine glass filter media, hot-melt integrated separator without metal corrosion risk. It passes UL flame retardant test, adapts full humidity 100% RH environment and 80℃ long-term constant temperature working condition, with 600Pa recommended final resistance, stable operating performance, serving as standard replacement filter for fixed ceiling ducted purification modules.
Outer Frame: Extruded Anodized Aluminum, anti-rust, anti-corrosion, high rigidity
Filter Media: Wet laid microfine glass paper, high dust capture precision
Separator Type: Hot melt glue spacing, integrated bonding, no metal material
Sealing Material: Non-flowing, non-hardening Polyurethane gel sealant
Filtration Efficiency: 99.99% / 99.995% / 99.9995% particulate removal efficiency
Frame Classification: Standard Gel Seal, Reverse Gel Seal dual types
Frame Depth Size: Standard Gel: 3 1/8”(80mm); Reverse Gel:3”(75mm),3 7/8”(93mm)
Max Constant Working Temperature: 80℃ (170 ℉)
Recommended Final Pressure Resistance: 600Pa (2.4” W.G)
Flame Retardant Grade: UL Classified fire safety certification
Adaptable Relative Humidity: 100% full humidity resistant operation
Zero Air Leakage Gel Sealing: Permanent elastic polyurethane gel will not flow or harden, knife-edge full submergence sealing realizes frame edge zero bypass air leakage, ensures actual purification efficiency reaches standard stably.
Dual Structural Optional Design: Standard front gel type for conventional housing installation; reverse rear gel type for space-limited air duct, embedded mounting saves ceiling internal installation space.
Indoor Convenient Maintenance: Reverse gel model supports room-side direct access replacement, no need to disassemble external air duct components, cuts maintenance time and labor cost greatly.
Extreme Environment Adaptability: Tolerates 100% full humidity damp air environment, supports 80℃ long-term constant high temperature operation, suitable for pharmaceutical, sterilization high-temperature purification workshops.
High-Grade Filtration Performance: Three ultra-high efficiency grades optional, captures micro particles, bacteria, aerosol efficiently, meets Class 100 / Class 10 cleanroom purification standard.
Durable Anodized Frame: Integral extruded anodized aluminum frame, anti-oxidation, anti-corrosion, anti-deformation, long service life in complex air duct environment.
UL Fire Safety Guarantee: Whole filter UL classified flame retardant, avoids fire hazard inside ventilation air duct, compliant with international cleanroom safety standards.
Universal Housing Matching: Standard size matched all mainstream knife-edge sealing filter housings and ducted modules, direct replacement for old ceiling embedded HEPA filters.
Stable Operating Resistance: Scientific media folding design controls final resistance at 600Pa, balances filtration efficiency and air supply volume, reduces air conditioning fan energy consumption.
Built-in reserved gel groove on aluminum frame is filled with special polyurethane gel. When installing the filter into matched knife-edge housing, the sharp knife edge is pressed and submerged into gel layer. The non-hardening gel fits the edge of knife edge seamlessly to fill tiny assembly gaps, blocking unfiltered air cross leakage from filter frame gap. Internal microfine glass media intercepts airborne fine particles to finish high-efficiency air purification, realizing frame sealing + media filtration dual protection.
Medical operating room ceiling air supply
pharmaceutical factory clean workshop
electronic semiconductor dust-free workshop
laboratory high-purity air system
permanent embedded ceiling ducted air modules
hospital HVAC purification system
food processing sterile workshop
high humidity industrial purification air duct
knife-edge housing matched ventilation filtration system
Q1: What is the difference between standard Gel Seal and Reverse Gel Seal HEPA Filter?
A1: Standard Gel Seal has gel groove on filter front upstream side, 80mm frame depth, for conventional knife-edge housing installation. Reverse Gel Seal sets gel groove on filter back upstream side, 75mm/93mm depth, embedded deeper into housing to save ceiling space, and supports indoor room-side maintenance.
Q2: Will the polyurethane gel sealant flow or harden after long use?
A2: No. Adopted special formula urethane gel, featured non-flowing and non-hardening permanent elasticity, no curing shrinkage, no cracking, keeps sealing performance for whole filter service cycle.
Q3: What kind of filter housing does this gel HEPA filter match?
A3: It is specially customized for housings and ducted modules equipped with knife-edge sealing structure. The knife edge must insert into gel groove to achieve airtight anti-leakage effect.
Q4: What is the maximum temperature and humidity this filter can withstand?
A4: Max constant operating temperature is 80℃, adaptable to 100% relative humidity full damp environment, suitable for humid and high-temperature purification workshops.
Q5: Why gel seal design is better than traditional rubber gasket seal?
A5: Traditional rubber gasket is easy aging, deformed and gap-leaking; gel seal fits knife edge seamlessly automatically, no assembly gap, zero air leakage, no frequent replacement of sealing accessories.
Q6: What filtration efficiency grades can be selected?
A6: Three optional efficiency grades: 99.99%, 99.995%, 99.9995%, meeting different high-standard cleanroom purification demands.
Q7: Is this filter fireproof for air duct application?
A7: Yes. The whole filter obtains UL Classified flammability certification, compliant with building air duct fire protection codes, safe for ceiling embedded ventilation system.
Q8: What does recommended final resistance 600Pa mean?
A8: When the filter wind resistance rises to 600Pa after dust accumulation, it is the recommended replacement time, to ensure air supply volume and purification efficiency of the air handling system.