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Product Overview
Our Stainless Steel Filter Disc is a precision-engineered filtration component designed specifically for membrane filtration systems, laboratory filtration holders, and industrial separation processes. Manufactured from high-grade stainless steel with precision woven or sintered construction, these filter discs provide reliable particle retention, exceptional chemical resistance, and long service life across demanding applications.
Whether used as a standalone disc in a filter holder assembly or integrated as a support screen for membrane filtration, our stainless steel filter discs deliver consistent performance with minimal pressure drop. The rigid construction ensures mechanical stability under high differential pressures, making them ideal for both laboratory-scale and industrial-scale filtration operations.
The disc serves dual functions in membrane filtration systems: as a mechanical support that prevents membrane rupture under pressure, and as a pre-filtration layer that extends membrane life by removing larger particulates before they reach the membrane surface.
Key Features
Premium Material Construction
Available in stainless steel grades including SUS304, SUS316, and SUS316L — with 316L being the default choice for its superior corrosion resistance. 316L stainless steel offers excellent resistance to acids, alkalis, and aggressive fluids, ensuring long-term durability in harsh chemical environments.
Precision Filtration Performance
Filtration accuracy ranges from 0.5 μm to 300 μm, accommodating applications from ultra-fine particle removal to coarse separation. The uniform pore structure delivers consistent filtration efficiency and predictable flow characteristics.
High Temperature & Chemical Resistance
Operates reliably across an extreme temperature range from –200°C to +600°C. The material remains chemically inert and stable, suitable for hot gases, superheated fluids, organic solvents, and corrosive media.
Superior Mechanical Strength
Sintered construction produces fusion bonds at all contact points, significantly increasing puncture resistance, fatigue resistance, and overall structural integrity. The rigid disc maintains its shape and filtration accuracy under high-pressure conditions.
Reusable & Cleanable
Unlike disposable membrane filters, our stainless steel discs are fully reusable. They can be regenerated through backflushing, ultrasonic cleaning, chemical treatment, or thermal treatment, significantly reducing long-term operating costs.
Customizable Specifications
Available in custom diameters (from 5 mm to 3000 mm or larger), thicknesses (0.5 mm to 10 mm), and pore sizes to meet specific application requirements. Edge treatments, mounting rings, and sealing grooves can be incorporated upon request.
Technical Specifications
| Parameter | Specification |
|---|---|
| Materials | SUS304, SUS316, SUS316L (default), Monel 400, Inconel 600, Hastelloy (upon request) |
| Filtration Accuracy | 0.5 – 300 μm (nominal) |
| Temperature Range | –200°C to +600°C |
| Disc Diameter | 5 mm – 3000 mm (customizable) |
| Thickness | 0.5 – 10 mm (customizable) |
| Structure | Single layer, double layer, or multi-layer sintered |
| Porosity | 40% – 60% (depending on construction) |
| Air Permeability | 1.8 – 6.0 (depending on grade) |
| Surface Finish | Polished / electropolished available |
| Compliance | RoHS compliant, REACH compliant |
Applications
Membrane Filtration Systems
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Support disc for membrane filter holders in laboratory and industrial pressure filtration
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Underdrain support for 47 mm, 90 mm, 142 mm, and 293 mm disc membrane holders
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Pre-filtration layer to extend membrane life in sterile filtration applications
Pharmaceutical & Biotechnology
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Filtration of cell culture media, ophthalmics, vitamins, and antibiotics
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GMP-regulated environments requiring pharmaceutical-grade filtration
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Three-in-one filtration, washing, and drying equipment
Chemical Processing
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Filtration of corrosive liquids, solvents, and chemical intermediates
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High-temperature gas and liquid filtration
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Catalyst recovery and product purification
Laboratory & Analytical
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Particulate removal from HPLC solvents
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Filtration analysis with solid phase extraction disks
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Sample preparation and quality control testing
Industrial Applications
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Petrochemical, nuclear power, synthetic fiber, and food processing industries
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Gas bubbling, fluidization, and flow control applications
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Aerospace and semiconductor fluid handling
Additional Applications
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Sparger discs for gas dispersion in reactors and fermenters
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Protective barriers for valves, pumps, and nozzles
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Backpressure plates and diffusion filters in analytical setups
Customization Options
We understand that every filtration application has unique requirements. Our stainless steel filter discs can be fully customized to your specifications:
| Customization Parameter | Options |
|---|---|
| Disc Diameter | 5 mm – 3000 mm+ |
| Disc Thickness | 0.5 mm – 10 mm+ |
| Filtration Rating | 0.5 μm – 300 μm |
| Material Grade | SUS304, SUS316, SUS316L, Monel, Inconel, Hastelloy |
| Structure | Single layer, multi-layer (5–6 layers standard) |
| Edge Treatment | Plain, reinforced rim, mounting ring, sealing groove |
| Surface Finish | Polished, electropolished, as-sintered |
| Shape | Round, rectangular, oval, or custom profiles |
Quality Assurance
Our stainless steel filter discs are manufactured under strict quality control systems. Each disc is produced with:
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ISO 9001:2015 certified manufacturing processes
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Uniform pore consistency ensuring predictable filtration performance
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Precision thickness tolerance for proper sealing in filter holders
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Compliance with RoHS and REACH regulations
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Stringent inspection of filtration accuracy, mechanical strength, and surface quality
For pharmaceutical and food-grade applications, discs can be manufactured to meet sanitary standards with electropolished surfaces and validated cleanability.
Why Choose Our Stainless Steel Filter Discs?
| Benefit | Advantage |
|---|---|
| Long Service Life | Reusable design with multiple cleaning cycles reduces replacement costs |
| Chemical Compatibility | 316L stainless steel resists acids, alkalis, solvents, and aggressive fluids |
| Thermal Stability | Operates from –200°C to +600°C for extreme process conditions |
| Mechanical Robustness | Sintered construction provides superior strength and puncture resistance |
| Consistent Performance | Uniform pore structure ensures reliable filtration efficiency |
| Versatile Applications | Suitable for laboratory, pharmaceutical, chemical, and industrial use |
| Full Customization | Tailored dimensions, pore sizes, and materials to meet specific needs |
Frequently Asked Questions
Q: What is the difference between woven mesh and sintered filter discs?
A: Woven mesh discs are made from woven wire cloth and provide surface filtration. Sintered discs are produced by fusing multiple layers of wire mesh or metal powder at contact points, creating a rigid structure with depth filtration capability, higher mechanical strength, and better puncture resistance.
Q: Can these filter discs be sterilized?
A: Yes. Stainless steel filter discs can be sterilized by autoclaving, dry heat, or chemical sterilization methods. The material remains stable through repeated sterilization cycles.
Q: How do I clean a stainless steel filter disc?
A: Discs can be cleaned using backflushing, ultrasonic cleaning, solvent rinsing, or chemical cleaning. The sintered structure withstands aggressive cleaning methods without degradation.
Q: What is the typical lead time?
A: Standard specifications typically ship within 30 days. Custom orders with specific dimensions or pore sizes require approximately 35–40 days.
Q: Are these discs suitable for food and pharmaceutical applications?
A: Yes. Our 316L stainless steel discs meet sanitary standards and are suitable for food, beverage, and pharmaceutical applications where purity and corrosion resistance are critical.
Q: What is the maximum disc size available?
A: We can manufacture discs up to 3000 mm in diameter. Please contact us for specific size requirements.
Q: Can I get a sample for testing?
A: Sample discs are available upon request. Please contact our sales team with your specific requirements.
Ordering Information
To place an order or request a quotation, please provide the following specifications:
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Disc diameter (mm)
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Disc thickness (mm)
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Filtration rating (μm)
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Material grade (SUS304 / SUS316 / SUS316L / other)
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Structure type (single layer / multi-layer / sintered powder)
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Quantity required
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Any special requirements (edge treatment, surface finish, certifications)
For technical support, custom design assistance, or to discuss your specific filtration requirements, please contact our engineering team.
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