Skip to content 
Resin Bonded Acrylic Phenolic Filter cartridge
Pure Resin Bonded (RBC) Series: High-Performance Two-Stage Depth Filtration
In high-stakes industries like Aerospace, Marine Defense, and Petrochemical Refining, fluid purity is non-negotiable. The K Filter Pure Resin Bonded (RBC) Series is a specialized two-stage depth filter engineered specifically for the challenges of high-viscosity fluid filtration. Utilizing a sophisticated blend of phenolic resin and acrylic fibers, these cartridges offer a rigid, uniform microporous structure that delivers absolute reliability where conventional filters fail.
The Science of Strength: Our Phenolic-Acrylic Hybrid Advantage
“By chemically welding acrylic fibers within a high-performance phenolic resin matrix, we’ve eliminated the ‘soft-filter’ compression that causes bypass in high-viscosity industrial streams.”
______________________________________________________________________________________________________________________________________________
The Engineering Advantage: Phenolic Resin & Acrylic Composition
Our RBC Series is designed to solve the “compression” problem found in standard filters:
Two-Stage Depth Filtration: An outer “pre-filter” layer captures large particulates, while the densified inner layer provides precision polishing at the rated micron size.
Rigid Structural Strength: The resin-bonding process creates a “fixed” pore structure. This eliminates the “unloading” of contaminants and prevents the residual debris common in machined or grooved cartridges
Viscosity Mastery: Engineered for high-viscosity fluids (oils, resins, and paints), the RBC series maintains high flow rates under intense differential pressure without collapsing.
Broad Chemical Compatibility: The acrylic-phenolic blend is resistant to a wide range of aggressive solvents, hydrocarbons, and industrial chemicals.
Global Industrial Applications
| Market | Primary Application | Why the K Filter RBC Series? |
|---|---|---|
| Aerospace & Defense (USA/Europe) | Hydraulic & Lube Oil Filtration. | High-pressure stability and zero media migration for sensitive systems. |
| Petrochemical & Refinery (Asia/Middle East) | Process Solvents & Heavy Crudes. | Survives aggressive chemistry and handles “sticky” hydrocarbon particulates. |
| Marine & Naval | Fuel & Lubricant Purification. | Corrosion-resistant and rugged enough for the harshest offshore environments. |
| Industrial Coatings | Paints, Resins, and Inks. | Phenolic bonding prevents the filter from “softening” in the presence of strong solvents. |
Our Key Features
- High strength
- Depth filtration
- High temperature resistant
- Highly phenolic resin blended
- High dirt absorption
Application
Widely used in Hydrocarbon, fuel, petroleum, coolant water vanishes, color, printing
ink, waxes, solvents, chemical and hydraulic liquids filtration.
The K Filter Pure Resin Bonded Series is specifically engineered as a high-performance, 100% interchangeable alternative to industry-standard resin-bonded cartridges. These filters utilize a phenolic resin and acrylic fiber blend to provide the structural integrity and chemical resistance required for demanding industrial applications.Below is the interchangeability guide for the K Filter Pure Resin Bonded series against the specific brands you mentioned
______________________________________________________________________________________________________________________________________________
Frequently Asked Questions (FAQ)
The Power of Phenolic Resin
Phenolic resin offers good acid resistance, mechanical strength and heat resistance.
1. What is the Pure Resin Bonded Series?
The Pure Resin Bonded Series is a high-performance, two-stage depth filter cartridge. It is constructed from a blend of phenolic resin and acrylic fibers, cured to create a rigid, “fixed-pore” structure. Unlike standard melt-blown filters, these do not compress under high pressure, ensuring consistent filtration of viscous fluids
2. Why choose Resin Bonded over standard Melt-Blown filters?
Standard filters often compress or “unload” trapped dirt when pressure spikes occur. The Pure Resin Bonded series features:
- Rigidity: It handles high-viscosity liquids (paints, inks, resins) without collapsing.
- No Media Migration: The resin bonding ensures fibers don’t break off into your clean fluid.
- Temperature Resistance: It can withstand temperatures up to 121°C (250°F), which is much higher than standard Polypropylene.
3.Which brands can I replace with the Pure Resin Bonded Series?
This series is designed for 100% interchangeability with the following industry-standard filters:
3M / Cuno: Micro-Klean™ RB Series and RBC Series.
Global Filter: GRU-V® Series.
Suze / Hypure: Hypure AF Series.
Pentair: Pentek Resin Bonded Series.
4. What are the typical applications for these filters?
Due to their chemical resistance and strength, they are widely used in:
Coatings: Paints, printing inks, lacquers, and varnishes.
Petrochemicals: Lube oils, fuels, and hydraulic fluids.
Industrial: Machine coolants, completion fluids, and process water.
Refineries: Hydrocarbon processing and waxes.
5. Are these filters available in different surface types?
Yes. To match your existing setup, they come in two main formats:
- Grooved: Increases the surface area by nearly 50%, allowing for higher dirt-holding capacity and longer life.
- Smooth: Used in specific applications where high-velocity flow or specific housing clearances are a factor.
6. What micron ratings are available?
The series covers a broad range of filtration needs, typically available in:
1µm, 5µm, 10µm, 25µm, 50µm, 75µm, 100µm, and 150µm.
7. How do I know if they will fit my existing filter housing?
The Pure Resin Bonded Series follows standard industrial dimensions:
- Outside Diameter (OD): 2.6 inches (approx. 66 mm).
- Inside Diameter (ID): 1.1 inches (approx. 28 mm).
- Lengths: 9.75″, 10″, 19.5″, 20″, 29.25″, 30″, and 40″.
8. What is the “Two-Stage” filtration benefit?
The cartridge is designed with a graded density. The outer section acts as a pre-filter for larger particles, while the inner core provides final filtration at the rated micron. This prevents the surface from “blinding” (clogging) too quickly, significantly extending the life of the cartridge
9. Is there a risk of “Media Migration” or shedding?
No. One of the primary advantages of the Pure Resin Bonded series is its high structural strength. Unlike “grooved” or “machined” cartridges that can leave debris in the line, our resin-cured fibers are locked into a permanent matrix. This is critical for Aerospace and Marine Defense applications.
10. How does it perform at high temperatures?
The phenolic resin blend is naturally heat-resistant. While it is designed for viscous liquids, it maintains its integrity at elevated process temperatures, making it a favorite for refineries in Asia ,Africa and the USA where process fluids are often heated to lower their viscosity
100% Interchangeability Guide
| Brand / Series | K Filter Equivalent | Compatibility Notes |
| Micro-Klean™ RB Series(3M/Cuno)* | Pure Resin Bonded Series | Matches the rigid, resin-bonded structure. Replaces both the standard and grooved versions to increase surface area and dirt-holding capacity. |
| GRU-V® Filter (Global Filter)* | Pure Resin Bonded Series | Direct replacement for the phenolic resin-bonded depth cartridges used in paints, inks, and coatings. |
| 3M™ RBC Filter* | Pure Resin Bonded Series | Fully compatible with the two-stage depth filtration process, offering the same high-temperature and viscous fluid performance. |
| Suze Hypure AF Filter* | Pure Resin Bonded Series | Direct cross-reference for resin-bonded glass/acrylic fiber cartridges used in chemical and hydrocarbon processing. |
Technical Note: When switching from 3M Micro-Klean or GRU-V, you do not need to change your housing or settings. The K Filter Pure Resin Bonded series is a “drop-in” replacement that matches the flow rate and pressure drop characteristics of the original.
*Brand Names used only for reference
