Base Resistant FKM BDBR Series Fluoroelastomer
Overview
BDBR Series: Base Resistant FKM for Extreme Amine, Steam & Chemical Stability
The BDBR Series (Base Resistant FKM) is an elite class of fluoroelastomers specifically engineered to overcome the chemical limitations of standard bisphenol-cured FKMs. Developed for superior resistance to strong bases (Caustic Sodas), high-temperature steam, and amine-containing corrosion inhibitors, the BDBR series maintains its structural integrity and sealing force in the most aggressive high-pH environments. With a unique polymer backbone and optimized cross-linking system, these compounds provide extraordinary resistance to sour gas ($H_2S$) and concentrated acids, ensuring long-term reliability for oilfield seals, chemical pump gaskets, and automotive cooling systems. Whether facing thermal cycling up to +230°C or exposure to aggressive industrial cleaners, the BDBR series delivers a low-compression-set solution that prevents swelling and embrittlement, drastically extending the service life of critical sealing components.
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Amine & Base Specialist
Specifically formulated to prevent the "de-hydrofluorination" (brittleness) caused by amines and high-pH fluids in standard FKMs.
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Exceptional Steam Stability
Outperforms traditional fluoroelastomers in continuous steam and hot water applications, making it ideal for power generation and sterilization equipment.
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Superior Chemical Versatility
Offers a broad resistance profile covering concentrated acids, strong oxidizers, and various organic solvents in a single material grade.
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Optimized Mechanical Recovery
Engineered for a low compression set, ensuring the seal returns to its original shape and maintains tight closure under fluctuating pressures.
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Processing Excellence
Designed for excellent mold flow and release, supporting high-efficiency production of O-rings, gaskets, and complex oilfield packers.
Material & Manufacturing Process
- Specialized Polymer Backbone:Utilizes a modified monomer sequence (often peroxide or specialized bisphenol systems) to eliminate the chemical "weak links" susceptible to base attack.
- Precision Compounding:Mixed under rigorous quality control to ensure uniform curative dispersion, which is vital for achieving consistent chemical resistance across every part.
- High-Pressure Readiness:Available in high-hardness formulations (up to 90 Shore A) for applications requiring resistance to Rapid Gas Decompression (RGD) and high extrusion forces.
Solutions & Application Scenarios
- Oil & Gas (Downhole):Seals for packers, valves, and BOPs exposed to sour gas ($H_2S$) and amine-based drilling additives.
- Chemical Processing:Gaskets for pumps and piping systems handling concentrated sodium hydroxide (NaOH) and aggressive cleaning agents.
- Automotive Engineering:Cooling system O-rings and engine seals that must resist modern OAT coolants and oil additives.
- Power & Industrial:High-pressure steam valve seals and boiler gaskets requiring hydrolytic stability.
Why BDFS Series FVMQ? (The Engineering Solution)
- Solving Material Failure:Standard FKMs often turn hard and crack when exposed to bases. BDBR remains flexible, preventing catastrophic leaks.
- Extended Maintenance Cycles:By resisting chemical degradation, BDBR reduces the frequency of seal replacements, saving significant labor and downtime costs.
- Custom Hardness & Color:Available in various shore hardness levels to meet specific pressure requirements and color-coded for easy identification in the field.
Product Specifications
| Grade | Mechanical Properties | Heat Aging 250℃×70h | FUEL C Resistance 23℃x70hrs | Low Temperature Resistance | Processing Method | Descriptions & Features | Typical Uses | |||||||||||||
| Specific Gravity g/cm3 | Hardness Shore A | Tensile Strength MPa | Elongation at Break % |
Compression Set % 200℃×70h |
Change in Hardness | Change in Tensile % | Change in Elongation % | Change in Hardness | Change in Tensile % | Change in Elongation % | Change in Volume % | Brittle Temperature ℃ | Compression | Transfer | Injection | Extrusion | Bonding | |||
| BDP: Peroxide curable series; BDPL: peroxide curable low temperature series; BDBR: peroxide cured base resistant series. The first letter before the numbers: H - black, KK-brown, KR-Red，LG-Green，LB-Blue; The first number: recipe code; The second number and the third number: Hardness; The last number: requirements: 1-low compression set, 2-good hot tear, for complicated geometry | ||||||||||||||||||||
| BDBR-H5701 | 1.80 | 71 | 16 | 240 | 29 | 2 | -14 | -6 | -3 | -12 | -9 | 3 | -13 | O | O | O | Excellent mold flow, mold release, excellent chemical.steam,acid,base,resistance | replacement of AFLAS, sealing parts in oilfield, heat exchangers gaskets | ||
| BDBR-H1701 | 1.60 | 70 | 14 | 230 | 36 | 2 | -18 | -9 | -3 | -15 | -11 | 4 | O | O | O | O | Peroxide curable, excellent chemical.steam,acid resistance, improved processing ability | Oil seals, gasket, cables and other parts requires chemical ,steam and acid/alkali resistance | ||