Manufacturer of high temperature filtration total solutions
SYNRUI Environmental Technology (Liaocheng) Co., Ltd. boasts a 20,000㎡ modern factory and a 3,500㎡ Class 100,000 cleanroom, making it one of the few comprehensive manufacturers in China capable of simultaneously producing a full range of filtration products including Pre/Medium/EPA/HEPA/ULPA/High-Temp Filters. Based on ISO9001, ISO14001, and ISO45001 management systems, we provide complete solutions for high-temperature operating conditions (baking ovens, coating lines, sterilization tunnels, optical coating equipment, etc.), from filter media selection to structural design, performance testing, and engineering applications.
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350℃High Temp Deep Pleated HEPA FilterFor air purification systems that require stable operation in high-temperature environments, the 350℃High temp deep pleated HEPA filter is an ideal choice, offering both high performance and -
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170℃ High Temperature Filter170℃ high temperature filter can operate stably for a long time in a high temperature environment of 170℃. It has excellent high temperature resistance and excellent filtering effect. It is an ideal -
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240℃ High Temperature Fiber Oven Filter240℃ high temperature fiber oven filter is an air filtration device used in drying rooms. It is a primary filter with exceptional filtration efficiency and high-temperature resistance. It utilizes -
![300℃High Temp Synthetic Fiber Oven Filter]()
300℃High Temp Synthetic Fiber Oven Filter300℃ high temp glass fiber oven filter is an air filtration device specially designed for high temperature drying environment and can operate continuously and stably under 250℃ working conditions and -
![250℃High Temp Medium Efficiency Filter]()
250℃High Temp Medium Efficiency Filter250℃ high temp medium efficiency filter uses ultra-fine glass fiber filter paper as filter medium, galvanized frame or aluminum frame as frame, and is sealed and assembled by glass fiber rope. It is -
![300℃High Temp Deep Plate HEPA Filter]()
300℃High Temp Deep Plate HEPA Filter300℃high temp deep plate HEPA filter is an air filtration device specially designed to work in high temperature environment (up to 300 degrees Celsius). It has overcome the difficult problem of -
![350℃ High Temp Pleated HEPA Filter]()
350℃ High Temp Pleated HEPA Filter350℃ high temp pleated HEPA filter is an air purification device that can work stably in high temperature environments up to 350℃. It is mainly used to capture more than 99.99% of 0.3μm particles and -
![170℃ High Temp Glass Fiber Filter]()
170℃ High Temp Glass Fiber FilterThe core feature of the 170℃ high temp glass fiber filter is that it can withstand high temperature environments of 170℃. It is suitable for industrial scenarios that require high temperature drying -
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High Temp Aluminum Alloy Frame FilterHigh temp aluminum alloy frame filter is an air filtration device designed for extremely high temperature industrial environments. It is made of non-woven high temperature resistant synthetic fiber -
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High Temperature Air FilterHigh temperature air filter is a primary filter device based on European EN 779:2012 standard, mainly used to intercept dust particles in high temperature drying environment. It uses glass fiber as -
![250℃High Temp Air Filter]()
250℃High Temp Air Filter250℃ high temp air filter is an air filter that can work normally in a high temperature environment of 250℃. It adopts a non-partition structure and high temperature resistant materials, and can -
![300℃High Temp HEPA Filter]()
300℃High Temp HEPA Filter300℃ high temp HEPA filter adopts a partition structure, through specific high temperature resistant glass fiber and 304 stainless steel frame and other components, It can effectively intercept and
High Temperature Resistance Air Filters are terminal filtration devices specifically developed for high-temperature cleanroom processes. They maintain high filtration efficiency in high-temperature operating environments without deformation, delamination, melting, or structural degradation. They can withstand continuous operation at 250–350°C.
The product uses a stainless steel frame and metal partitions to prevent structural deformation due to high temperatures. Metal seals/heat-resistant gaskets ensure no leakage at high temperatures.
They maintain a filtration efficiency of ≥99.97%–99.995% in high-temperature environments.
These filters are commonly used in critical industrial processes requiring "high-temperature sterilization + high cleanliness," and are irreplaceable by ordinary HEPA/ULPA products.
Product Advantages
Significantly Sustainable High-Temperature Operation
SYNRUI utilizes ultra-fine, heat-resistant glass fiber filter paper and a high-temperature adhesive bonding process.
The filter media maintains its fiber structure stability at 280–350°C, preventing melting, decomposition, or delamination. The adhesive bonding uses high-temperature resistant binders that do not produce volatiles, ensuring stable filtration efficiency even under high-temperature operation.
All-Metal Structure with Deformation Resistance
High-temperature environments can cause ordinary frames to expand and deform, leading to leaks.
Utilizing a 304 stainless steel frame, all-metal aluminum partitions, and heat-resistant sealing strips, these designs ensure stable shape during long-term high-temperature operation, reducing production risks.
Silicone-Free Design
The entire series of high-temperature filters is silicone-free, suitable for:
Optical coating
Aerospace spraying
Cleanroom painting
Avoiding silicone contamination and improving process yield.
High Humidity and Chemical Stability
High-temperature and humid environments can easily cause structural changes in ordinary filter media.
Our filter media features resistance to damp heat, non-hygroscopic properties, and excellent chemical stability, making it ideal for applications such as pharmaceutical hot air sterilization tunnels and drying systems.
Stable High Efficiency
Each filter undergoes EN1822 efficiency testing (H13/H14).
MPPS Single-Point Scan
High-Temperature Durability Testing
Resistance/Airflow Uniformity Testing
Factory pass rate remains above 99.8%, suitable for B2B customers with extremely high stability requirements.
Customizable for Different High-Temperature Equipment
We support customization of sizes, airflow rates, sealing methods, frame types, and filter media types, especially suitable for OEM manufacturers of FFUs for High Temp, paint booths, tunnel ovens, and other equipment.
Differences from Commonly Used Products on the Market
Common Problems on the Market:
Frame warping after high-temperature operation
Cracking at adhesive joints
Efficiency drop
Filter media charring or becoming brittle
Strong odor and high volatile matter content during high-temperature operation
SYNRUI's Differences:
Uses high-temperature stable glass fiber filter media (specifically designed for 280–350°C environments)
All-metal structure + temperature-resistant seal, no deformation over long periods
Conducts actual high-temperature operation testing before leaving the factory
Equipped with an independent temperature resistance testing furnace in the factory
Outputs real data, ensuring high-temperature reliability
Application Scenarios
- Automotive paint booths: Reduce surface particles and improve coating smoothness.
- Food/pharmaceutical sterilization tunnels: Ensure pharmaceutical-grade air cleanliness after high-temperature sterilization.
- Optical coating equipment: Avoid particle-induced defects, resulting in higher film uniformity.
- Semiconductor curing and drying production lines: Reduce the risk of surface particles on products and improve production yield.
- Industrial ovens/tunnel furnaces: High-temperature clean transport system and hot air circulation system.
Packaging, Shipping, and Transportation
To prevent product frame deformation under high temperatures, SYNRUI uses custom-made metal corner protectors, double-layer reinforced boxes, EPE + cardboard cushioning structure, and export pallets + waterproof membrane packaging. Transportation options include sea freight, air freight, land freight, and dedicated line shipping to ensure safe delivery of products.
After-sales service
Provide high-temperature equipment matching and selection services
24-hour technical support
Lifespan assessment and replacement cycle calculation
Factory can provide high-temperature durability test reports
OEM/ODM long-term cooperation preferential policies
Who We Are
SYNRUI is one of the few domestic companies with the capability to produce a full range of air filters. Our products are exported to over 70 countries, and we possess mature technological advantages in the field of high-temperature filtration.
Our value proposition includes:
Strong R&D capabilities (high-temperature resistant fiberglass, metal sealing, multiple structure options)
A rigorous quality management system
Extensive experience in industrial applications
Reliable delivery times and stable supply capacity
A professional service team providing technical guidance
We not only provide filters, but also complete high-temperature purification solutions.
FAQ
Q: 1. What is the highest temperature (°C) that our high-temperature resistant HEPA filters can withstand?
A: Our high-temperature resistant series is available in three grades: 250°C, 300°C, and 350°C, based on structure and materials. The core components use high-temperature resistant glass fiber filter paper and a stainless steel frame, and have undergone continuous high-temperature stability testing for 30-60 minutes to ensure long-term operation without deformation or performance degradation.
Q: 2. Will the filter media shrink or carbonize under high temperatures?
A: No. The glass fiber filter paper we use has a low heat shrinkage rate (<1%) and strong resistance to carbonization. Its stability has been verified over a long period in 300°C baking production lines and powder drying workshops.
Q: 3. Why do our filters have a longer lifespan than ordinary high-temperature filters?
A: SYNRUI uses a folded support rib + metal partition structure, which makes the filter media more evenly stressed, maintaining low resistance attenuation even under high temperatures. Compared to common products on the market, its lifespan is extended by 20%–30%.
Q: 4. What operating conditions are our high-temperature filters suitable for?
A: Suitable for continuous high-temperature environments (200–350℃) such as curing ovens, baking ovens, high-temperature coating lines, food drying equipment, lithium battery separator drying rooms, and high-temperature sterilization tunnels in the pharmaceutical industry.
Q: 5. Does it support customization for non-standard sizes or special temperature ratings?
A: Yes. OEM/ODM can be provided according to customer equipment size, air volume, and temperature requirements, including frame material (SUS304/SUS316), filter media weight, and mounting flange method.
Q: 6. What are the efficiency ratings of high-temperature filters?
A: Available:
H10–H14 (HEPA)
E10–E12 (EPA) All performance parameters are individually scanned and leak-tested according to EN1822 and ISO 29463 standards.
Q: 7. What is the main difference between high-temperature filters and ordinary HEPA filters?
A: The biggest difference lies in the temperature-resistant materials: filter paper, separators, adhesives, frames, and sealing materials are all specifically designed for high temperatures. Standard HEPA filters experience significant performance degradation above 90–120℃, while high-temperature models can operate stably for extended periods at 250–350℃.
Q: 8. What is the sealing method? Will it leak at high temperatures?
A: We use high-temperature silicone seals and ceramic fiber gaskets, with a temperature resistance up to 350℃. Each filter undergoes a high-temperature seal integrity test before leaving the factory to ensure no micro-leakage.
Q: 9. What is the initial resistance of the high-temperature HEPA filter? Does it significantly affect energy consumption?
A: The initial resistance is typically between 180–320 Pa (based on rated airflow). We can optimize the folding depth according to the equipment's airflow to ensure lower resistance and better energy efficiency.
Q: 10. What quality inspection documents are available?
A: Each unit can be provided with:
Factory inspection report
EN1822/ISO 29463 leak detection report
High-temperature test record (optional)
Material MSDS. Supports third-party re-inspection by organizations (SGS/CNAS).
If you are sourcing high-temperature resistant HEPA filters or require customized solutions to fit your existing equipment, please contact us immediately.
SYNRUI engineers will provide technical selection, quotation, and sample services within 24 hours.
As one of the most professional high temp resitance air filter manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy high temp resitance air filter for sale here from our factory. Contact us for quotation.
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