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Contact This is a gel seal high-efficiency filter from Oltaven, built to remove fine particles from air in critical cleanrooms and equipment. It filters airborne particles at H12 through U15…
FILTER MEDIA / ROLLS · SHEETS · DIE-CUT
This is a gel seal high-efficiency filter from Oltaven, built to remove fine particles from air in critical cleanrooms and equipment. It filters airborne particles at H12 through U15 efficiency levels (EN 1822), using ultra-fine glass fibre media sealed in a gel channel to prevent bypass leakage. It is designed for semiconductor fabs, pharmaceutical cleanrooms, hospital operating theatres, FFU systems and high-standard coating lines where reliable particle control matters. Oltaven manufactures the finished filter, not just the media, so media choice, pleating, framing and sealing all come together in one product you can specify with confidence.
Glass fibre media sets the starting point for efficiency, but the finished filter’s performance is decided by how that media is handled and assembled. Ultra-fine glass fibre with high flux and moisture resistance is used here, and the way it is pleated affects resistance and dust-holding capacity. Tighter pleats pack more media into the same frame, which can lower resistance and raise capacity, but only if the pleats stay open and evenly formed. Oltaven controls pleating, frame assembly and gel sealing in-house so the finished filter behaves as specified, not just the raw paper.
Framing and sealing turn a sheet of media into a reliable cleanroom component. The anodised aluminium frame holds the pleat pack square, and the polyurethane gel sealant creates a continuous seal when the filter sits in its gel channel. This gel seal is what prevents air from slipping past the filter, which is the main cause of efficiency loss in critical installations. Because Oltaven sells finished filters, every step from media selection to final leak check is part of the product you receive.
Three factors decide how a finished gel seal filter performs in service: media grade, pleat geometry and seal integrity. The media grade sets the efficiency class, from H12 up to U15, and also influences resistance and capacity. Pleat geometry balances airflow against pressure drop; more pleats can lower resistance and increase dust holding, but only within the limits of the frame depth. Seal integrity, provided by the gel channel, ensures that all air passes through the media rather than around it.
Resistance and capacity are also shaped by the frame depth and the gel seal type. Side gel seal and top gel seal configurations suit different housings, and Oltaven offers both so the filter fits the installation rather than forcing a compromise. The table below summarises the main specifications for standard sizes; custom sizes, gel channel widths and airflow ratings are available through OEM/ODM.
Gel seal HEPA and ULPA filters are used where particle control is critical. Typical applications include semiconductor wafer fabrication cleanrooms, biopharmaceutical GMP workshops, Class 100 hospital operating theatres, FFU purification units and high-standard coating lines. In these environments, the gel seal prevents bypass leakage that could compromise the entire cleanroom classification.
Oltaven’s gel seal filters are also suited to automotive and machinery manufacturing, energy and metal smelting, energy storage, AI computing and data centres, commercial air conditioning and ventilation systems, and pharmaceutical and food processing. Each application may call for a specific efficiency grade and size, which is why Oltaven offers H12 to U15 options and custom dimensions.
| Item | Detail |
|---|---|
| Product name | Gel Seal HEPA & ULPA Filter (high-efficiency panel filter) |
| Filter class (EN 1822) | H12 / H13 / H14 (HEPA) / U15 (ULPA) |
| Core filter media | High-flux, moisture-resistant ultra-fine glass fibre |
| Frame and seal material | Anodised aluminium profile + polyurethane gel sealant |
| Installation type | Top gel seal / side gel seal |
| Core applications | Semiconductor wafer cleanrooms, biopharmaceutical GMP workshops, Class 100 hospital operating theatres, FFU purification equipment, high-standard coating lines |
| Standard sizes and rated airflow (W × H × D) | Side gel seal, 50 mm depth: 610×610×50 mm (airflow 1000 m³/h); 1170×570×50 mm (airflow 1800 m³/h). Top gel seal, 70 mm depth: 610×610×70 mm (airflow 750 m³/h); 1170×570×70 mm (airflow 1300 m³/h). Maximum supported high-airflow specification: 3600 m³/h. |
| Customisation (OEM/ODM) | 50,000 m² plant and CNAS-accredited testing centre; ISO/IATF16949 certified. Supports non-standard sizes, gel channel widths and airflow requirements. |
Oltaven has been developing and manufacturing filtration products for more than 20 years, with over 1,000 filter solutions developed to date. That OEM/ODM experience means we can adapt media, frame, gel seal and packaging to your project rather than offering only catalogue items. The production base covers 50,000 m² in Zhongshan, Guangdong, China, including six cleanrooms with a combined area of 20,000 m² where gel seal filters are assembled.
Quality control runs from incoming material inspection through in-process checks to outgoing inspection. Our own laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity and resistance. The company holds ISO 9001, ISO 14001 and ISO 45001 certifications, and in 2024 obtained IATF 16949 automotive quality management system certification. Products comply with REACH and RoHS environmental regulations, and compliance documents are available on request.
Starting a custom gel seal filter project with Oltaven follows a clear sequence:
To move your project forward, please send us the device or vehicle model, required size or drawing, airflow (or water flow if relevant), operating conditions (temperature, humidity, contaminants) and quantity. This information lets our engineers recommend the right gel seal filter configuration and provide an accurate quotation. Contact Oltaven to discuss your requirements and request samples. We welcome the opportunity to work with you as a long-term filtration partner.
Resistance depends on the filter media, pleat geometry and frame depth, not just the outer dimensions. A filter with more pleats or deeper pleats can have lower resistance because there is more media area for air to pass through. Gel seal integrity also matters: if air bypasses the media, resistance may appear lower but efficiency drops. Oltaven balances these factors for each specification.
An OEM project starts with your requirements: device or housing model, efficiency class, dimensions or drawing, airflow, operating conditions and quantity. Oltaven’s engineering team reviews these and proposes a filter configuration, then provides a quotation and sample timeline. Samples are typically available within 7–10 days for your validation.
The gel seal filter is available in H12, H13, H14 and U15 efficiency classes according to EN 1822. H13 provides ≥99.95% efficiency for 0.3 μm particles, and H14 provides ≥99.995%. U15 is an ULPA class for even higher removal efficiency. The right class depends on your cleanroom requirement.
Yes. Oltaven supports OEM/ODM customisation of dimensions, gel channel width, frame material, efficiency class and airflow rating. Both side gel seal and top gel seal configurations are available. Share your drawing or housing details and we will confirm feasibility.
Minimum order quantity for standard sizes is typically 10–50 units; custom sizes are negotiated based on specification and quantity. Standard lead time is 15–25 days, and larger orders may take 30–45 days. Urgent orders can be expedited on request.
Yes, paid samples or small trial batches are available, usually within 7–10 days. Samples allow you to verify fit and performance on your equipment before placing a production order. Contact our sales team to request a sample plan.
Under normal conditions with G4 pre-filters and F8 medium filters upstream, the service life is typically 3–5 years. Replace the filter when resistance reaches twice the initial resistance or the design final resistance, usually 450–600 Pa. Monitoring pressure drop is the most reliable way to judge replacement timing.
Oltaven holds ISO 9001, ISO 14001 and ISO 45001 certifications, and obtained IATF 16949 certification in 2024. The company’s laboratory is CNAS-accredited and can issue test reports for efficiency, dust holding capacity and resistance. Products comply with REACH and RoHS regulations.