Depth filtration solutions for industrial oil systems
Depth filtration technology removes contaminants throughout a multi-layer, porous filter media, preventing rapid surface clogging and delivering high dirt-holding capacity, long service life, and stable flow performance. It is ideal for hydraulic oil and lubrication oil systems operating under high contamination conditions.
SINFT offers alternatives for:
CJC Replacement
Triple R (RRR) Replacement
PALL Replacement
OEM Depth Filtration Products
This Must Be What You Care About Most
Structural Integrity Testing
Our replacement filter elements are tested to 4 microns, 99.9% efficiency and 1000 beta values, ensuring clean oil and extended equipment life.
Flender Foam Test
Our Depth filter elements perform well in the Flender foam test (ISO 12152:2012). Our filters fully comply with the standard and do not remove the original anti-foaming agent in the oil during use.
Depth filtration vs. surface filtration
| Comparison dimension | Deep filtration (CJC / RRR / Pall disc filter) | Surface filtration (Standard cartridge / Woven mesh / Simple paper) | Why it matters |
|---|---|---|---|
| Filtration mechanism | Depth filtration — contaminants captured throughout the media thickness | Surface filtration — contaminants trapped primarily on the outer surface | Depth provides higher dirt holding before clogging |
| Dirt holding capacity | High — captures particles throughout entire media | Low to Moderate — surface only | Longer service life & fewer element changes |
| Particle capture efficiency | High — excellent for fine particles (≤1–3 μm) and sludge | Lower — limited to particles larger than surface pores | Better oil cleanliness and protection |
| Pressure drop profile | Gradual, stable with loading | Rapid increase as surface blocks | Longer usable life; fewer bypass events |
| Contaminant types removed | Fine particles, oxidation by-products, sludge, resins | Mainly large particulates | Critical for oil condition management & system longevity |
| Life cycle / service interval | Longer | Shorter | Lower maintenance frequency |
| Fluid compatibility | Wide — oils, high-viscosity fluids, complex chemistries | Generally fewer fluid types | More versatile for varying industrial oils |
| Typical media structure | Multi-layer deep packed, tortuous path | Single layer surface screen or simple bonded paper | Depth structure enables progressive capture |
| Suitability for offline filtration | Excellent — designed for continuous offline cleaning systems | Not suitable | Offline systems demand strong depth media |
| Application examples | Offline oil filtration (CJC/Triple R), fine fuel & lubricant purification | Basic hydraulic returns, reservoir strainer | Depth filters suit high-risk contamination environments |
| Cost efficiency (lifecycle) | Higher upfront but lower replacement cost per life | Lower upfront but faster replacement | Better TCO for demanding systems |
| Clogging behavior | Slower clogging due to internal capacity | Fast surface blockages | Depth keeps longer open pathways |
Key Advantages of SINFT Depth Filtration
True Depth Filtration Structure
Improving system reliability at the source
SINFT adopts a multi-layer, density-gradient depth filtration structure that captures and disperses contaminants progressively within the filter media.
High Dirt-Holding Capacity
Significantly extended replacement intervals
Based on cellulose depth filtration media and optimized structural design, SINFT filter elements provide greater dirt-holding capacity.
Filter Media Sourcing
A stable and controlled foundation
SINFT utilizes mature natural cellulose and composite media systems from premium suppliers including HV (USA) and Donaldson/Lydall-based media.
Consistency & Quality Control
Batch stability for long-term use
Each filter design is rigorously validated through multi-pass flow testing, structural integrity testing, and durability life simulation.
SINFT depth filtration product series
Cellulose filter elements (CJC replacement)
SINFT CJC replacement filters are made from 100% sustainable natural cellulose with a multi-layer depth filtration structure, efficiently removing particles, moisture, and contaminants. Environmentally friendly and cost-saving, rigorously tested for reliability and durability, they extend oil life and optimize overall operating costs.
Key advantages & features
- Extended equipment life: Effectively reduces gearbox wear and pump/valve failures.
- Maximized oil performance: Maintains oil cleanliness and extends oil change intervals to over 5 years.
- High-efficiency filtration: Multi-layer cellulose media with a graded pore structure ensures excellent particle capture and high dirt-holding capacity.
- Advanced filtration media: High-purity, specially treated cellulose combined with inorganic filter aids adsorbs oxidation by-products and sludge.
- Exceptional contaminant holding capacity: Dirt-holding capacity is 5–10 times higher than conventional tubular filter elements.
- Stable water absorption performance: Efficient moisture removal without compromising filtration efficiency.
- Cost-effective operation: Enhanced pressure resistance and robust construction reduce overall filtration costs by up to 30%.
RRR replacement filter elements
SINFT offers Triple R replacement filter elements made from deep composite and adsorptive depth filtration media, providing 100% full-size interchangeability with enhanced flexibility, stable supply, and cost efficiency.
Constructed from high-density cellulose blended with synthetic fibers, these filters employ true depth filtration, capturing contaminants throughout the entire media thickness rather than just on the surface, ensuring efficient and long-lasting filtration performance.
- OEM-compatible dimensions & fit: Direct replacement for original Triple R filter housings with no modification required.
- Stable, high-efficiency filtration performance: Continuously removes fine contaminants to maintain oil cleanliness.
- Optimized dirt-holding capacity: Designed for continuous offline filtration systems to extend maintenance intervals.
- Cost-effective alternative solution: Equivalent filtration performance with optimized manufacturing costs.
- Applications: RRR filter elements with high dirt-holding capacity, deep cellulose media, and long service life are ideal for industrial oil systems with heavy contamination loads. They play a critical role in hydraulic, lubrication, energy, and heavy industrial applications.
PALL disc-type filter module replacement
The SINFT replacement PALL disc filter module represents a key milestone in deep filtration technology, designed to deliver efficient, stable, and scalable clarification filtration solutions for biopharmaceuticals, vaccines, fermentation processes, and high-purity chemical applications.
Each SINFT disc filter module consists of three core components:
- Filter disc unit
- Tubular core
- Adapter
Key advantages
- Superior integration and compatibility: The depth filter sheets exhibit high mechanical strength, enabling effortless integration into modules.
- High-efficiency filtration performance: Delivers high efficiency and outstanding filtration performance to ensure reliable clarification results.
- Economic advantages: Provides a more cost-effective alternative to filter cartridges, lowering overall operational costs.
Applications
Inventory & Other Advantages
SINFT maintains large inventory stocks and comprehensive production capabilities to serve customers worldwide.
Advanced Inventory Management
Sophisticated system with dedicated personnel and advanced software.
- 2,100 m² storage space
- Proprietary warehousing software
- Automatic low-stock alerts
Strict Pre-Shipment Inspection
100% pre-shipment inspection ensuring product reliability.
- ISO standards testing
- Complete inspection reports
- ISO 9001 certified
Comprehensive Packaging
- Standard packaging
- Custom outer packaging
- Laser marking
Your Advantages with SINFT
- 80+ supplier relationships
- 300+ filter media types
- 3D printing capabilities
Centralized Shipping
Efficient logistics through centralized warehousing system.
Custom Filter Solutions
From prototype to mass production, tailored filtration solutions.
SINFT Replacement Depth Filter Filter Elements
For a more comprehensive product selection, please refer to our full product catalog to help you make an efficient choice:
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