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The Thesvin washable HEPA filter is a cylindrical filter element designed for handheld and cordless vacuum cleaners, robot vacuums, and related cleaning appliances. It captures fine dust, PM2.5, dust mites, pollen, and hair from the airstream, helping to prevent secondary contamination from exhaust air. Built for OEM fitment, it is aimed at vacuum manufacturers and aftermarket brands that need a reliable, custom-fitted filter solution.
Fitment is the starting point for every Thesvin cylindrical filter. The outer frame is produced by injection moulding to match the host device’s dust cup and air duct, and a rubber sealing ring is integrated around the edge to maintain airtightness and stop dust bypass. Because the filter sits directly in the suction path, the diameter, height, pleat count, and end-cap geometry must align precisely with the mounting features inside the vacuum. Thesvin therefore offers 100% structural and dimensional customisation: you provide the target dimensions, a drawing, or an original filter, and the tooling and production process are adapted accordingly.
This fitment-first approach ensures that the filter locks into place without play, seals against the housing, and does not interfere with the motor or battery pack. It also means the replacement process for end users remains straightforward – the filter slides in and out as intended by the appliance design.
The filter media is a high-precision PTFE membrane, often combined with PP melt-blown layers and an antibacterial treatment. This construction targets particles down to PM2.5, as well as dust mites, pollen, and hair that accumulate in the dust cup. By capturing these contaminants before they reach the exhaust, the filter helps reduce secondary pollution in the room.
Despite its high capture efficiency, the media is engineered for low airflow resistance. The high-porosity, breathable structure allows air to pass freely, which helps maintain strong suction, prevents motor overheating, and supports longer battery runtime. The filter is also washable: after correct cleaning and complete drying, it can be reused for multiple cycles, reducing waste and ownership cost.
| Item | Detail |
|---|---|
| Product name | Vacuum cleaner filter element / robot vacuum filter |
| Core filter media | High-precision PTFE membrane / composite PP melt-blown / antibacterial filter paper |
| Core purification function | Captures PM2.5, dust mites, pollen, hair and other particles in the dust cup; prevents secondary exhaust pollution |
| Physical fluid characteristics | High-porosity breathable design, very low operating resistance, high dust holding capacity, helps prevent motor overheating and improve battery life |
| Main applications | Handheld cordless vacuums, smart robot vacuums, mattress mite removers, wet-dry vacuums, car mini vacuums |
| Frame and dimensional customisation | 100% customised to the device air duct and dust cup dimensions. Eco-friendly injection-moulded frame and rubber sealing ring edge treatment for 100% airtightness and no dust leakage |
| Company certification | 50,000 m² modern production base and national-level CNAS testing centre. ISO 9001, ISO 14001 and IATF 16949 quality management systems |
Thesvin operates a 50,000 m² manufacturing facility in Zhongshan, Guangdong, China, including six cleanrooms totalling 20,000 m². The company has been certified to ISO 9001, ISO 14001, and ISO 45001, and since 2024 also holds IATF 16949 certification for automotive quality management. Dimensional consistency is controlled through IQC, IPQC, and OQC checks at every stage, and our CNAS-accredited laboratory can verify filtration efficiency, dust holding capacity, and resistance. Products comply with REACH and RoHS, and we support OEM/ODM projects with custom dimensions, structures, media grades, frame materials, logos, and packaging. With over 20 years of experience and more than 1,000 filtration solutions developed, we export to Europe, the US, Japan, and Korea. Multiple automated production lines provide monthly capacity in the millions of pieces.
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Thesvin produces this cylindrical filter to match your specific vacuum model. Fitment is ensured by custom tooling based on your drawing, 3D model, or an original filter sample. We confirm interface dimensions, seal placement, and pleat count before production.
Our washable HEPA filter can achieve H11 to H13 efficiency grades, corresponding to ≥95% to ≥99.95% filtration efficiency for 0.3 μm particles, depending on the media selected. Performance is verified in our CNAS-accredited laboratory to ensure batch-to-batch consistency.
Yes. You can send us the original filter from your device, and our engineering team will measure it and develop the tooling accordingly. This is often the fastest way to ensure a perfect fit, especially for aftermarket applications.
Under correct cleaning and complete drying, the filter can typically withstand 20 to 30 wash cycles with filtration performance remaining within an acceptable range. Actual life depends on dust load and cleaning method.
For standard specifications, the MOQ is typically 3,000 pieces; for custom tooling, it is generally 5,000 pieces. Lead time is 25–35 days after order confirmation, depending on production schedule.
Yes. We can provide samples for your evaluation. Stock samples are free of charge (you cover freight), while custom samples may incur a tooling fee that is refundable against volume orders. Sample lead time is 3–7 days for stock and 15–20 days for custom.
Replacement interval depends on usage and dust load. As a guideline, replace the filter when suction noticeably decreases or after 6–12 months of regular use, even with washing. For heavy use, more frequent replacement may be needed.
Absolutely. We offer full OEM/ODM support, including custom dimensions, pleat count, end-cap design, seal material, logo printing, and packaging. Our team can also help optimise the design for manufacturability and cost. Contact us to discuss your project.