Sintered Felt Air Filter Cartridge 208x156

Products Description

The custom sintered felt air filter cartridge is a high‑performance cylindrical filtration element engineered for demanding industrial air and gas filtration applications where extreme temperatures, corrosive environments, and high‑precision particle removal are required. This pleated sintered felt filter cartridge is manufactured to your exact dimensional, media, and end cap specifications—ensuring seamless integration into your existing filtration system.

Sintered felt filter elements are manufactured from stainless steel fiber felt—a porous, three‑dimensional depth filtration material created by lapping and laminating stainless steel fibers, followed by high‑temperature vacuum sintering. The random, non‑woven fiber structure forms a highly porous network with controlled pore size distribution, providing depth filtration characteristics that capture particles not just on the surface but throughout the entire media thickness. This unique structure delivers significantly higher dirt‑holding capacity and longer service life compared to surface‑type filters.

Specification of The Sintered Felt Air Filter

Type	Custom Air Filter Cartridge
Outer diameter	208 mm
Height	156 mm
Connection	Flange
Filter layer	Sintered felt with protective mesh
Skeleton	304 Stainless steel diamond mesh
Working media	Air, high‑temperature gases, corrosive gases, process gases
Origin	Henan, China

The parameters listed above are specific to this custom air filter. Please send us your required parameter information to obtain a quote.

Features of Sintered Felt Air Filter

Depth Filtration for Superior Dirt‑Holding : The three‑dimensional, non‑woven fiber structure captures particles throughout the media thickness, providing significantly higher dirt‑holding capacity and longer service life than surface‑type filters. Pressure rises slowly, extending replacement cycles.

High Porosity and Excellent Permeability : Porosity reaches up to 80%, delivering low pressure drop and high flow rates. The open structure minimizes energy consumption while maintaining high filtration efficiency.

Excellent Filtration Precision : Available in filtration ratings from 1‑200 μm. Removes particles down to 1‑3 μm with high efficiency. Gradient pore structures available for enhanced performance.

Pleated Design Maximizes Filtration Area : The folded configuration significantly increases effective filtration area within the compact envelope, providing higher flow capacity and longer service life compared to flat sintered felt elements.

Manufacturer & Supplier of Custom Air Filter Cartridge

Huahang Filter, a filter element manufacturer with over 20 years of production and operation experience, adheres to quality as its core principle and strictly controls every production process.

In-house Media Expertise: We control the key parameters of the non-woven media—such as fiber type, diameter, density, and layering—allowing us to engineer cartridges for specific dust characteristics and efficiency targets, rather than relying on generic off-the-shelf media.
Engineered for Performance & Durability: Our cartridges are not merely assembled; they are engineered systems. We optimize the synergy between the filter’s package, the supporting inner and outer cages (made from galvanized or stainless steel), and the sealing system (using molded polyurethane or other gaskets) to ensure structural integrity during operation and vigorous pulse-jet cleaning cycles.
Full-range Customization Capability: Beyond standard sizes, Huahang Filter provides comprehensive customization. This includes tailoring media composition and grade, adjusting physical dimensions (diameter, length), modifying end cap designs, and developing special features such as fire-retardant treatments or anti-static coatings to meet unique operational challenges.
Quality-Driven Manufacturing: Each production batch follows a controlled process, from raw material inspection to final performance validation. We ensure consistent quality and reliable performance in every cartridge shipped.

Application

High‑Temperature Gas Filtration : Removes particulate contaminants from high‑temperature process gases in metallurgical, chemical, and power generation applications where temperatures exceed 300‑600°C.
Petrochemical and Refining : High‑temperature gas filtration, catalyst recovery, and process gas purification in refineries and petrochemical plants.
Metallurgical Industry : Purifies high‑temperature from smelting, sintering, and metal processing operations.
Semiconductor and Electronics : High‑purity air and gas filtration for chip manufacturing and cleanroom applications.
Hydraulic and Pneumatic Systems : Air intake and exhaust filtration for hydraulic reservoirs, compressors, and pneumatic systems.
Catalyst Recovery : Captures and recovers valuable catalyst particles from gas streams in chemical and petrochemical processes.
Power Generation : Gas turbine intake filtration and flue gas cleaning in power plants.
Environmental Protection : Removes harmful particulates and pollutants from industrial exhaust gases.

Comparison of Common Air Filter Cartridge Media

Filter Media Type	Key Characteristics / Mechanism	Primary Advantages	Common / Ideal Applications
Non-woven Fabric	Depth Filtration	High dust capacity, cost-effective, good moisture resistance, versatile and customizable.	General dust collection (wood, metal, powder), HVAC pre-filters, engine air intake, industrial ventilation.
Glass Fiber	Depth & Surface Filtration.	Higher initial efficiency	Final filters in paint booths, pharmaceutical air, HEPA/ULPA pre-filters, some high-temperature processes.
PTFE Membrane (Laminated onto a substrate)	Surface Filtration.	Highest efficiency & excellent dust release	Demanding applications: food, pharma, carbon black, fine chemicals requiring ultra-clean air or no cross-contamination.
Stainless steel	Surface Filtration & Reusable.	Extremely durable, cleanable & reusable	High-temperature gas filtration, catalyst recovery, polymer processing, aggressive chemical fumes.

Contact us for more details about the air filters.

FAQ

Q1: How does a Sintered Felt Air Filter work?

A1: The filter captures particles through multiple mechanisms including surface interception, inertial impaction, diffusion, and deep-layer particle retention. Unlike surface filters, contaminants are trapped throughout the filter thickness, increasing dirt-holding capacity and service life.

Q2: Can this sintered felt filter cartridge be cleaned or washed?
A2: No. Sintered felt is not cleanable. Unlike sintered mesh (woven wire), the non‑woven fiber structure traps contaminants deep within the media thickness. Water washing, backwashing, or ultrasonic cleaning will not remove embedded particles and will damage the fragile fiber structure.

Q3: What causes pressure drop increase in sintered felt cartridges?

A: Main reasons include:

Particle loading inside pore structure
Oil mist or sticky aerosols clogging fibers
Improper cleaning cycles
Oversized dust load beyond design capacity

Gradual pressure rise is normal; sudden spikes indicate severe fouling.

FAQ

What is the difference between a standard filter and a custom filter?

Standard filters are mass-produced in fixed sizes and specifications, while custom filters are designed to match specific equipment dimensions, operating conditions, and filtration requirements. Custom filters improve sealing, efficiency, and service life.

How do I select the right filter for my application?

Filter selection depends on fluid or air type, particle size, flow rate, pressure, temperature, and compatibility with the system. Providing operating data helps ensure optimal filtration performance.

Will your replacement filter cartridges damage my equipment? Is the quality guaranteed?

Absolutely not. Our replacement filter cartridges strictly adhere to OEM dimensions, interfaces, and performance standards, using equivalent or superior filter materials, and have passed rigorous ISO testing and end-user validation. We provide a quality guarantee to ensure the safe operation of your equipment.

We don't have a specific model number, only operating condition requirements. Can you help us select a suitable model?

Yes, but you need to provide:

① the filtering medium (oil, gas, water, chemical liquid?);

② flow rate, pressure, and temperature;

③ required filtration accuracy;

④ connection type.

Our technical team will recommend the most economical solution for you.

How can I ensure that this filter element can be adapted to my device/system?

We have multiple ways to ensure compatibility:

Provide original filter element information: Please provide the brand, model, clear photos or detailed dimension drawings of your existing filter element (especially the interface type and size, length, outer diameter, inner diameter).

Provide equipment information: Tell us your equipment brand, model or application scenario, etc.

Contact us: Our technical team has rich experience and can quickly determine or design a fully compatible replacement filter element based on the information you provide. It is recommended that you contact us directly to obtain the most accurate adaptation plan.

How do you ensure the quality and performance of the filter element?

Quality is our lifeline. We insist on:

Strict material selection: Use high-quality raw materials that meet industry standards.

Advanced technology: Use automated or precision-controlled production processes.

Multiple quality inspections: Implement full-process quality inspections from raw material storage to finished product delivery (including size, sealing, filtration efficiency, integrity testing, etc.).

Performance testing: Key products will undergo actual working condition simulation testing.

Compliance with standards: Our production and products comply with [e.g.: ISO 9001].

Customized verification: For customized filter elements, we will confirm key performance indicators with customers and provide test reports (if necessary).

What is a dust collector filter used for?

Dust collector filters remove airborne dust and particulate matter from industrial processes such as welding, grinding, woodworking, and powder handling to protect equipment and improve air quality.

How often should dust collector filter cartridges be replaced?

Replacement depends on dust load, operating hours, and cleaning efficiency. A consistent increase in pressure drop is a common indicator that the filter needs replacement.

Can dust collector filters be cleaned and reused?

Many cartridge filters are designed for pulse-jet cleaning, but they are not permanently reusable. Over time, media fatigue reduces performance and replacement becomes necessary.

What micron rating is best for hydraulic oil filtration?

Common hydraulic filters range from 3 to 25 microns. The optimal rating depends on system sensitivity and manufacturer specifications.

What happens if a hydraulic oil filter is not replaced on time?

Delayed replacement can cause pressure loss, valve sticking, pump wear, and reduced system efficiency, leading to costly downtime.

Where are precision filters commonly used?

Precision filters are widely used in electronics manufacturing, pharmaceuticals, food processing, chemical processing, and high-purity fluid systems.

How does precision filtration affect system performance?

Precision filtration improves product quality, extends equipment life, and reduces unplanned downtime caused by contamination.

What is the difference between a coalescer filter and a separator filter?

They are two distinct technologies often used together to remove liquids from a gas or liquid stream. The key difference is their core function:

A Coalescer Filter merges tiny, invisible liquid droplets into large, heavy ones.

A Separator Filter catches and drains those large droplets from the flow.

How They Work:

Coalescer: The stream passes through a special media (like fine fibers). Microscopic aerosol droplets collide and merge (coalesce) into drops large enough to drain. It solves the problem of suspended mist.

Separator: The flow then enters a chamber with baffles or vanes. The now-large droplets hit the surfaces, fall out by gravity, and collect in a sump. It provides the final, clean separation.

Are stainless steel filter elements washable?

Yes, most stainless steel filter elements can be cleaned using backflushing, ultrasonic cleaning, or chemical cleaning methods.

Sintered Felt Air Filter Cartridge 208×156

Products Description

Specification of The Sintered Felt Air Filter

Features of Sintered Felt Air Filter

Manufacturer & Supplier of Custom Air Filter Cartridge

Application

Comparison of Common Air Filter Cartridge Media

FAQ

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