Wholesale Industrial Air Filter Cartridges Supplier

Industrial air filter cartridges are used to remove particulates from compressed air, process gases, and ventilation streams in manufacturing facilities.

When sourced wholesale, these components are supplied in bulk quantities to OEMs, maintenance contractors, and distribution centers that require consistent performance and traceability.

The cartridges consist of a pleated filter media sealed within a rigid endcap assembly, designed for drop‑in installation in standard housings.

Construction and Materials

Filter media options include cellulose blends, synthetic polyester fibers, and glass‑fiber mats, each offering different efficiency versus pressure‑drop trade‑offs.

Typical media efficiencies range from 85% to 99.97% at 0.3 µm particle size, measured according to EN 1822 or ISO 29463 standards.

Endcaps are commonly produced from galvanized steel, stainless steel (AISI 304/316), or impact‑modified ABS, providing mechanical strength and corrosion resistance suited to the operating environment.

Sealing gaskets are selected from nitrile rubber, EPDM, or silicone compounds, with hardness ranging from 40 to 70 Shore A to maintain a leak‑tight interface under pressure cycles.

Performance Characteristics

Initial pressure drop varies linearly with flow rate; a typical cartridge of 200 mm length and 100 mm diameter shows a drop of 0.02 bar at 0.5 m/s face velocity for a 95% efficient media.

Dust holding capacity, defined as the mass of test dust retained before the pressure drop doubles, generally falls between 200 g and 800 g per cartridge depending on media depth and pleat geometry.

Burst pressure ratings exceed 4 bar for steel endcaps and 2.5 bar for ABS endcaps, providing a safety margin above normal operating pressures of 0.5–1.0 bar.

Operating temperature limits are –20 °C to +80 °C for standard nitrile gaskets, while silicone gaskets extend the range to –40 °C to +150 °C.

Applications

In pneumatic tooling lines, cartridges protect downstream regulators and valves from abrasive particles that would cause wear and seal failure.

Paint spray booths rely on high‑efficiency media to prevent overspray contamination of finished parts, reducing rework and improving finish quality.

Food and beverage processing facilities use cartridges with food‑grade gaskets and stainless‑steel endcaps to meet hygiene standards and avoid product contamination.

Pharmaceutical cleanrooms require absolute filtration (HEPA‑class) combined with low outgassing materials to maintain ISO 5 environmental conditions.

Quality Assurance

Each batch undergoes media integrity testing using a bubble point method to verify pore size distribution and detect any defects.

Dimensional checks confirm outer diameter, length, and endcap squareness within ±0.2 mm tolerances to ensure proper housing fit.

Burst pressure is measured on a statistical sample; results are recorded and compared against the specified minimum before release.

Final inspection includes a visual check for gasket seating, endcap weld quality, and labeling legibility.

Customization Options

Media grade can be selected from pre‑tested efficiency levels (85%, 95%, 99.95%, 99.97%) to match the required cleanliness class.

Endcap dimensions are adjustable; standard lengths range from 100 mm to 600 mm and diameters from 50 mm to 200 mm, with custom lengths available upon request.

Gasket material and hardness can be tailored to chemical compatibility or temperature extremes.

Optional surface treatments include powder‑coated steel endcaps for corrosion resistance or anti‑static coatings on the media for electrostatic discharge sensitive environments.

Typical Specification Ranges

Parameter	Typical Range	Unit
Filtration Efficiency (0.3 µm)	85 – 99.97	%
Pressure Drop @ 0.5 m/s	0.015 – 0.030	bar
Dust Holding Capacity	200 – 800	g
Operating Temperature	-20 to +80 (nitrile) -40 to +150 (silicone)	°C
Burst Pressure (steel endcap)	>4.0	bar
Endcap Material Options	Galvanized steel, Stainless steel (304/316), ABS	–

Frequently Asked Questions

Q: Can the cartridge dimensions be customized?

A: Yes. Length, outer diameter, and endcap configuration can be adjusted to match specific housing designs; custom tooling may be required for non‑standard sizes.

Q: What information is needed before a quotation can be issued?

A: Required details include desired filtration efficiency, media type, endcap material, gasket compound, operating pressure and temperature, and annual quantity.

Q: Which materials are available for the endcaps and gaskets?

A: Endcaps: galvanized steel, stainless steel (AISI 304/316), ABS. Gaskets: nitrile rubber, EPDM, silicone (various hardness grades).

Q: How is quality inspected before shipment?

A: Each lot undergoes media integrity (bubble point) test, dimensional verification, burst pressure sampling, and visual inspection of gasket seating and labeling.

Q: What packaging options are available for wholesale orders?

A: Cartridges are packed in corrugated cartons with internal dividers or on pallets with stretch‑film wrapping; protective corner boards and moisture barriers can be added for export.

Q: What is the typical production lead time?

A: Lead time depends on material availability and order size, generally ranging from 2 to 4 weeks for standard configurations; express options are available upon request.