This five-layer stainless steel sintered mesh filter cartridge is constructed from standard five-layer stainless steel wire mesh, diffusion-bonded under vacuum at high temperature into a monolithic rigid structure. The cartridge features an 18mm outer diameter and 25mm length, with filtration ratings of 100 mesh and 150 mesh. The end connection is a barbed hose fitting, machined entirely to customer drawings. Flow direction is outside-to-inside. Full TIG welding ensures complete, uniform, and robust weld seams, followed by acid pickling to remove heat tint for a clean, consistent surface finish. The five layers-protective layer, precision control layer, dispersion layer, support layer, and drainage layer-are sintered into an integral porous structure with interlocking mesh openings, delivering a uniform depth filtration path that combines surface retention precision with depth loading capacity.

The cartridge's five-layer architecture comprises, from outside to inside, a protective layer, a filtration control layer, a dispersion layer, a support layer, and a drainage layer. The protective layer uses coarser mesh to shield the precision filtration layer beneath; the control layer is a fine-woven mesh that determines final filtration accuracy; the dispersion layer optimizes fluid distribution to prevent localized velocity spikes; and the support and drainage layers provide exceptional mechanical strength and pressure resistance. This ordered stacking yields a mesh medium with virtually zero blind pores, unlike non-woven sintered felt, resulting in lower pressure drop and higher flux. The barbed hose fitting enables rapid push-on connection with a hose, using a frusto-conical profile to create a tight seal and high pull-off resistance, ideal for applications requiring frequent assembly and disassembly.

Products Specifications

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Material: 316L

Diameter: 18mm

Length: 25mm

Filtration accuracy: 100 mesh/150mesh

Connector: barbed hose fitting

Products Features

Five-Layer Rigid Sintered Construction for Stable Filtration Accuracy

The five layers of stainless steel mesh are diffusion-bonded under vacuum into a monolithic rigid porous medium. Pore size distribution is exceptionally uniform, and unlike plain woven mesh that may shift or deform under pressure fluctuations, the sintered structure locks the pore network permanently in place. Filtration ratings of 100 mesh and 150 mesh remain constant throughout the service life, ensuring predictable and reproducible filtration results.

Full TIG Welding for Robust, Aesthetic Seams

Both the longitudinal seam and end-cap joints are completed using full TIG welding under argon shielding. The low heat-affected zone produces dense, pore-free weld metal with a full, uniform bead profile that guarantees structural integrity and eliminates any risk of media bypass through seam gaps. Post-weld acid pickling removes heat tint, yielding a clean, consistent appearance inside and out-meeting customer standards for stringent visual inspection.

Outside-to-Inside Flow for Efficient Depth Loading

Fluid enters from the outside, first passing through the protective layer for coarse particle capture, then through the precision control layer for final filtration. This progressive mechanism distributes contaminants throughout the depth of the media rather than accumulating solely on the surface, significantly increasing dirt-holding capacity and on-stream life. The smooth pore channels also provide excellent backwash regeneration for repeated cleaning and reuse.

Compact Custom Dimensions for Versatile Installation

The 18mm diameter and 25mm length suit space-constrained precision filtration positions. The barbed fitting is machined integrally with the cartridge body to match customer drawings exactly, ensuring a perfect fit with the mating hose. Dual accuracy options of 100 mesh and 150 mesh allow users to select the appropriate rating based on downstream particle-size requirements, balancing filtration efficiency against operating cost.

applications

Precision Instruments and Hydraulic Systems: Used for final-stage oil filtration in precision machine tool hydraulic power units, servo systems, and measuring instruments. The compact 18mm diameter fits inside small hydraulic manifolds or inline fittings, while 100 mesh accuracy effectively captures metal wear debris and seal fragments, protecting precision valve spools and pumps from abrasive damage and extending hydraulic component service life.

Chemical Raw Materials and Solvent Filtration: Suitable for precision clarification of small-batch, high-value liquids in chemical production, including catalyst recovery and particulate removal after decolorization of fine chemicals. The 316L stainless steel sintered mesh offers excellent resistance to acids, bases, and solvents. The five-layer structure does not shed fibers or release extractables in corrosive media, ensuring filtrate purity is not compromised by the filter medium.

Pharmaceutical and Bioprocessing: Applied in drug solution polishing, terminal filtration of water for injection, and fermentation broth clarification. The fully welded, adhesive-free construction eliminates any risk of binder leaching, and the acid-pickled clean surface meets sanitary application requirements. 100 mesh accuracy effectively retains activated carbon fines and insoluble particles, ensuring drug clarity.

Food and Beverage Processing: Used for impurity removal in edible oils, alcoholic beverages, and soft drinks. The stainless steel construction is inherently suitable for food-contact applications, and the five-layer sintered mesh carries no fiber-shedding risk, introducing no foreign matter into food media. The barbed fitting connects easily to food-grade hose for pre-filtration on filling lines or sampling stations.

Gas Filtration and Purification: Used for dust and oil removal in compressed air and process gas lines, as well as pre-filtration protection for fermenter inlet sterile filters. The rigid sintered structure resists deformation under gas pulse backblow, effectively capturing solid particles to protect downstream membrane filters or precision equipment.

Water Treatment and Environmental Monitoring: Suitable for small-scale water sample filtration in laboratories, sampling pre-treatment for online monitoring instruments, and terminal security filtration in ultrapure water systems. The outside-to-inside flow direction allows captured contaminants to be easily removed by backwashing, and the cartridge is reusable, reducing consumable costs in monitoring systems.