Ultra-micro Customized Sintered Stainless Steel Filter Element

In the realm of precision instruments and micro-fluidic controls, spatial constraints often pose the most stringent challenges for filtration component design. Addressing this specific pain point, we TOPTITECH present this ultra-micro customized sintered stainless steel filter element. It is a 1:1 fully customized production strictly according to customer drawings, with core dimensions of only 7.6 mm in diameter and 11.1 mm in length-smaller than a standard button battery.

Achieving stable fluid filtration within such a minute volume is a significant test of sintering uniformity. We utilize 316L stainless steel powder for the filter layer, processed via vacuum high-temperature sintering to maintain high porosity and structural strength even at this micro-scale. To balance weld strength and corrosion resistance, the dense interface section employs 304 stainless steel, creating a seamless metallurgical bond that eliminates the risk of fracture during use.

Despite its small size, this filter achieves an absolute filtration accuracy of 15 microns (μm) , effectively capturing fine particles in industrial fluids. Furthermore, the element features a precision M5 threaded connection at the end, equipped with a standard oil-resistant rubber O-ring seal. This ensures a stable, leak-proof connection even in vibrating environments.

Material: 316L+304

Diameter: 7.6mm

Length: 11.1mm

Filtration accuracy: 15 micron

Connector: M5

Technique: sintering and welding

Products Features

 

 

Seamless Dissimilar Material Bonding: The filter part is made of 316L for superior corrosion resistance, while the interface uses 304 for mechanical strength. They are fused via vacuum sintering, ensuring purity and eliminating weld-induced fracture risks.

Precision Micro-sizing: With an OD of only 7.6mm, we have overcome the technical difficulty of uneven powder filling in small dies, ensuring uniform pore distribution and high dirt-holding capacity despite the micro volume.

 

High-precision M5 Thread: Unlike standard mesh screens, this M5 thread provides secure installation, easy replacement, and pressure resistance far exceeding ferrule connections. It is suitable for high-frequency maintenance or high-impact pressure scenarios.

Deep Depth Filtration: Unlike woven mesh (surface filtration), the sintered powder structure features three-dimensional pores.

It not only intercepts surface particles but also absorbs impurities through the deep matrix, achieving a filtration efficiency of over 99.9%.

 applications

 

 

 

 

Precision Analytical Instruments

Used for inline solvent filtration in Chromatography systems (HPLC) to prevent column clogging and ensure analytical accuracy.

 

Medical & Biotech Equipment
Designed for air circuit integration in ventilator gas sensors and point-of-care diagnostic platforms, this sintered filter enables high-efficiency microbial retention and particulate capture within exceptionally compact device architectures.

 

Aerospace & Aviation Hydraulics
Installed within the pilot-operated control loops of flight-critical servo valves, the element provides rigorous 15-micron particulate exclusion, directly contributing to the operational integrity of aircraft flight control systems.

 

High-end Fuel Injection Systems

Installed at the inlet of diesel common rail injectors; resistant to high pressure and fuel corrosion, preventing nozzle sticking.

 

Drones & Robotics

Positioned at the fluid intake of micro-pumps and miniature actuating valves in drone and robotic systems, this sintered filter efficiently removes airborne dust and mechanical wear particles while maintaining a low pressure drop across the element.

 

Petrochemical Sampling Systems

Serving as probe protection for online sampling analyzers, resistant to chemical solvent corrosion to ensure sample authenticity

 

Tel: 0917-3873009

Phone: +86 18992731201

Email: zhangjixia@bjygti.com

Fax: 0917-3873009

Address: No. 195, Gaoxin Avenue, High-tech Development Zone, Baoji City, Shaanxi, China

WhatsApp: +86 18992731201

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