EV Charging Stations
Filtration for Power Equipment
Cleanroom & Semiconductor
Ultra-High Cleanliness Filtration
Commercial HVAC
Central Air System Filtration
Data Centers
Precision Equipment Protection
Livestock & Farming
Farming Environment Purification
Spray Booths & Industrial Dust
Paint Mist & Dust Purification
Filtration for Power Equipment
Professional air filtration for EV charging devices, protecting against dust and sand ingress to ensure stable, reliable operation of charging piles and station infrastructure.
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Ultra-high efficiency filtration for semiconductor wafer fabs and precision electronics cleanrooms, capturing nano-scale particles to meet ISO Class 1–3 standards and maximize product yield.
View Related Products →Central Air System Filtration
High-efficiency filtration for commercial building HVAC systems, improving indoor air quality, reducing energy consumption, and extending equipment service life.
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Precision air filtration for data centers, shielding servers and critical hardware from dust contamination to keep cooling systems running efficiently and reliably.
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Dedicated filtration systems for farms and livestock facilities — capturing dust, adsorbing ammonia, and inhibiting pathogen spread to improve animal health and overall productivity.
View Related Products →Paint Mist & Dust Purification
Designed for spray booths and grinding workshops, efficiently capturing paint mist, metal dust, and wood chips to meet emission standards while protecting finished surface quality.
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Pre-Filter (G1–G4)
First-Stage Large-Particle Capture
Medium-Efficiency Filter (F5–F9)
Precise PM2.5 Capture
HEPA High-Efficiency Filter
Sterile-Grade Purification
ULPA Ultra-High Efficiency Filter
Sub-Micron Particle Capture
First-Stage Large-Particle Capture
The first line of defense, capturing particles ≥5 μm such as dust, hair, and fibers to protect downstream filters and extend overall system service life.
View Related Products →Precise PM2.5 Capture
Captures fine particles of 1–5 μm including PM2.5, pollen, and mold spores, significantly improving indoor air quality for commercial HVAC and ventilation systems.
View Related Products →Sterile-Grade Purification
≥99.97% filtration efficiency for particles ≥0.3 μm, delivering sterile-grade clean air widely used in medical, pharmaceutical, and electronics manufacturing.
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≥99.9995% efficiency for particles ≥0.12 μm, meeting the extreme cleanliness demands of semiconductor fabs, aerospace, and other ultra-precision applications.
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High-Temperature Resistant
Industrial-Grade Heat Tolerance
Washable & Reusable
Cut Costs, Reduce Waste
Activated Carbon
Odor & Harmful Gas Removal
Bag Filter
High Dust-Holding, Long Life
Panel / Pleated Filter
Compact Space-Saving Design
Low-Resistance Airflow
Energy-Saving Operation
Industrial-Grade Heat Tolerance
Built with specialized heat-resistant materials, operating stably up to 250°C for paint ovens, industrial dryers, and high-temperature process environments.
View Related Products →Cut Costs, Reduce Waste
Cleanable by water washing or air blowing, reusable multiple times to significantly reduce replacement frequency and O&M costs — an economical, eco-friendly choice.
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Leverages activated carbon's high adsorption capacity to eliminate odors, VOCs, and formaldehyde, ideal for newly renovated spaces and industrial exhaust treatment.
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Bag-style construction delivers a larger filtration area, high dust-holding capacity, and extended service life — ideal for high-dust environments with reduced replacement frequency.
View Related Products →Compact Space-Saving Design
Compact form factor for easy installation and replacement; pleated structure maximizes filtration area within a small footprint for higher efficiency.
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Low-resistance design minimizes pressure drop while maintaining filtration performance, reducing fan energy consumption for cost-effective, eco-friendly operation.
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Polyether Mesh Filtration Flame Retardant Foam (Whalesens WS-PRF)
Filter Media,10-60PPI
Ideal Environments
EV Charging Pile
Marine Engine Room Intake Filtration
Audio Speaker Protective Mesh Foam
HVAC System
EV Charging Pile
Marine Engine Room Intake Filtration
Audio Speaker Protective Mesh Foam
HVAC System
Core Product Highlights
Ordinary common filter foam ages rapidly, turns brittle and cracks easily under harsh conditions including high humidity, extreme temperature swings, continuous vibration and oil contamination. Whalesens WS-PRT polyether flame retardant foam adopts high-purity polyether polyurethane raw material, professionally engineered for complex industrial working scenarios, and acts as the ideal base media for industrial filtration equipment protection, ventilation isolation and acoustic absorption applications.
- Superior hydrolysis stability performance: This hydrolysis resistant polyurethane foam maintains stable structure even in long-term service inside EV charging piles, marine cabins and outdoor exposed devices. It effectively prevents hydrolytic aging, material embrittlement and powder dropping, greatly extending overall service life of your equipment filters.
- Ultra wide temperature tolerance range: The premium reticulated polyether foam keeps stable elasticity and physical integrity steadily from -45°F to 225°F (-43°C to 107°C), perfectly coping with outdoor sunlight exposure, frigid cold zones and high-temperature heat-generating mechanical environments.
- High airflow efficiency with low resistance & deep dust loading: Adopted advanced thermal reticulation process, the foam forms fully interconnected 3D open mesh structure with outstanding breathability. Combined multi-PPI gradient lamination achieves 2-stage or 3-stage systematic filtration, balancing huge dust holding capacity and minimal air pressure drop all at once.
- UL94 certified flame retardant safety: Strictly compliant with UL 94 fire safety standards, this UL94 flame retardant foam features low flammability performance, perfectly suitable for power EV devices, electrical enclosures and high-standard ventilation systems requiring fire prevention protection.
- Fully customizable reticulated foam structure: Support customized combined PPI pore configuration, special irregular die cutting and multi-layer composite processing, matching diversified installation space sizes and personalized functional filtration needs.
Product Description
Whalesens WS-PRF polyether flame retardant foam is a high-performance open-cell polyether polyurethane reticulated filter foam. Advanced thermal membrane removing technology thoroughly eliminates original thin cell walls, building a stable 3D skeleton with over 97% ultra-high open cell rate. The base polyether material delivers premium chemical inertness and excellent anti-hydrolysis performance, never getting brittle or powdered under persistent damp conditions.
Supplied in standard large foam sheets or precision custom die-cut shapes according to customer drawings, this industrial polyurethane filter foam covers massive professional application scenarios:
- EV Charging Piles & Power Electrical Equipment: Dust-proof & insect-proof protection for air intake / exhaust vents; waterproof breathable isolation base gaskets.
- Commercial Trucks & Construction Machinery: Heavy-duty industrial air filtration, oil mist separation purification and driver cabin fresh air ventilation management.
- Marine & Yacht Systems: Engine compartment air intake filtration, waterproof splash isolation, speaker grille protective foam cover and cabin safe ventilation control.
- Industrial Machines & Home Appliances: Motor internal dust isolation buffer, acoustic speaker mesh foam, scrubber air media and vacuum cleaner core filter layers.
- HVAC Air Conditioning Systems: Medium efficiency air filtration and primary gradient pre-filter essential material.
Typical Physical Properties
| Typical Values | Typical Performance Value & Specification |
|---|---|
| Base Raw Material | Polyether polyurethane (core guarantee for superior hydrolysis resistance) |
| Standard Factory Color | Charcoal gray; customized special colors available on demand |
| Density | 1.4 lb/ft³ (22.4 kg/m³), overall tolerance ±10% |
| PPI Aperture Range | 10–60 PPI (accuracy ±5 PPI); single-layer or multi-layer composite gradient filter structure supported |
| Tensile Strength | 20 psi (0.14 MPa), tolerance ±2 psi |
| Tear Resistance | ≥ 4.5 lbs/in (0.79 kN/m), tough for vibrating industrial installation |
| Elongation at Break | 180%, flexible & shockproof, stable under long-term vibration working conditions |
| Continuous Operating Temp | -45°F ~ 225°F (-43°C ~ 107°C), all-weather wide temperature adaptability |
| Hydrolysis Durability | Excellent — core advantage of polyether filter foam grade |
| Fire Safety Certification | UL 94 recognized, meets global air filter flame retardant testing norms |
Industry Application & PPI Selection Guide
| Application Scene | Recommended PPI Grade | Professional Selection Reason |
|---|---|---|
| EV Charging Pile Air Vents / Base Waterproof Gaskets | 30–45 PPI | Classic balance of low airflow resistance & fine dust blocking; weather-proof, moisture-proof EV charging pile filter foam for long outdoor service cycles |
| Marine Engine Room Intake Filtration | 30–50 PPI | Guarantees sufficient fresh air volume, blocks debris, insects & fiber matter; anti-hydrolysis, no powdering in salty damp marine air |
| Audio Speaker Protective Mesh Foam | 40–55 PPI | Dense uniform open cell structure, dust blocking + sound permeability + splash water resistance triple effect |
| Industrial Mechanical Motor Inlet Protection | 20–40 PPI | Prevent foreign particle inhalation while ensuring stable heat dissipation & smooth ventilation circulation |
| Oil Mist Separator / Industrial Scrubber Filtration | 15–20 PPI | Large stable mesh structure anti-blocking; polyether formula provides reliable oil & water corrosion resistance |
| HVAC System Dual-Layer Gradient Pre-Filter | 15–30 PPI + 40–55 PPI | Double composite gradient structure lifts overall dust holding capacity & prolongs HVAC filter replacement cycle |
Customization Service Strengths
- Size & Shape Solution: Large original foam sheet supply + precise die cutting / irregular stamping processing based on customer technical drawings.
- Multi-PPI Composite Lamination: Thermal bonding for different aperture reticulated foam, forming stable density gradient filtration media, upgrading total filtering efficiency and service life.
- Color Customization Upgrade: Beyond standard charcoal gray tone, support personalized color matching to unify whole equipment appearance design.
- Back Adhesive & Edge Sealing Treatment: Optional self-adhesive backing strips and edge wrapping simplify on-site installation, strengthen overall sealing & shockproof performance.
Professional Technical Support
We supply complete official test reports including air resistance-flow rate curve charts and PPI aperture-pressure drop contrast data. Our professional engineering team supports fluid dynamics calculation and fan type selection reference, helping customers balance optimal polyether flame retardant foam filtering performance and whole system energy-saving efficiency perfectly.
Whalesens Engineered exclusively for severe harsh environments, adaptable across industrial, EV, marine & HVAC diversified scenarios. Reliably safeguard long-term equipment internal cleanliness, ventilation smoothness and fire safety stability at all times.
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Our Commitment
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Quality Assurance
We have a robust quality and reliability assurance system spanning R&D to mass production. Our well-equipped laboratories and analytical instruments support chemical/raw material testing, failure analysis, yield improvement, reliability verification, and equipment calibration, ensuring consistent product quality and flexible customer satisfaction.
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Service Guarantee
We provide comprehensive after-sales support: our professional team stands ready to assist with any product issues or technical challenges. Upon receiving customer inquiries, we respond promptly to deliver optimal solutions, minimizing downtime and ensuring rapid resumption of your operations. Guided by a customer-centric approach, we continuously refine our service system to elevate overall service standards based on feedback and needs.
Our Materials and Craftsmanship
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Modernized Factory
Whalesens Technology’s modern factory features digital management, IoT-monitored automated lines for full-process control, and a Class 100,000 cleanroom for precision filter processing.
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Stringent Process Workflow
20+ precise inspections, CNC folding (error < 0.1mm) and extreme-condition validation ensure zero-defect, high-quality filters.
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Advanced and Reliable Materials
whalesens’s cartridges feature self-developed nano-glass fiber membranes (99.99% PM0.3 filtration, 15% lower resistance vs. imports) and key material autonomy—showcasing manufacturing strength.
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