描述
857G-299 Dark Brown is a solvent-based 857G-299 Dark Brown PTFE Topcoat from Chemours’ Teflon industrial coatings portfolio, genuinely manufactured by Chemours and imported as original product. As an authorized distributor and trader, we supply genuine material with full traceability and direct access to official Chemours technical documentation. For more product options and company information, please visit our website at https://szrqchem.com/.
This 857G-299 Dark Brown PTFE Topcoat is specifically formulated for low-temperature applications requiring exceptional non-stick performance, chemical resistance, and thermal stability across a broad temperature range. It provides reliable service from -200°C to +260°C (-328°F to 500°F) continuously, with intermittent tolerance up to 320°C (608°F). The solvent-based formulation ensures excellent leveling and film density, making it ideal for demanding industrial environments.
The 857G-299 Dark Brown PTFE Topcoat delivers outstanding release properties with a surface energy as low as 18-20 dynes/cm, significantly reducing material adhesion and cleaning downtime. Its dark brown finish offers both functional protection and aesthetic consistency for OEM branding. Unlike conventional coatings that degrade under extreme cold, this PTFE topcoat retains its flexibility and adhesion even at cryogenic temperatures, making it the preferred choice for aerospace and liquid-gas transfer applications.
With regular stock availability, we support both trial orders and large-volume bulk shipments for heat exchangers, automatic welding equipment, aerospace components, oil & gas applications, and other FDA-required applications.
Key Features of 857G-299 Dark Brown PTFE Topcoat
-
Wide Temperature Range – Continuously serviceable from -200°C to +260°C (-328°F to 500°F), with intermittent tolerance up to 320°C (608°F). The 857G-299 Dark Brown PTFE Topcoat retains flexibility and adhesion even at cryogenic temperatures.
-
Excellent Non-Stick Release – PTFE’s extremely low surface energy (18-20 dynes/cm) ensures effortless release of sticky materials such as syrups, resins, and adhesives; residual adhesion is less than 10% compared to uncoated surfaces.
-
Low Coefficient of Friction – Coefficient of friction between 0.05 and 0.20 (static) — up to 70% lower than bare metal, enabling oil‑free operation and reduced wear.
-
Outstanding Chemical Resistance – The 857G-299 Dark Brown PTFE Topcoat resists concentrated acids (e.g., 98% sulfuric acid), strong alkalis (30% sodium hydroxide), and a wide range of organic solvents including acetone, toluene, and carbon tetrachloride.
-
Excellent Corrosion Protection – The 857G-299 Dark Brown PTFE Topcoat can achieve up to 3000 hours of salt spray resistance at a thickness of only 0.8 mils, depending on the basecoat system.
-
Attractive Dark Brown Finish – Provides a unique, professional dark brown color that combines functional protection with visual consistency for OEM branding.
-
Excellent Weatherability – Retains >80% gloss after 10+ years of outdoor exposure, with minimal chalking or degradation.
-
Solvent-Based Formulation – Provides superior leveling and denser film formation compared to waterborne systems, preferred for high-performance industrial environments.
-
Thermal Stability – Maintains performance at elevated temperatures; tested for 2,000 hours at 260°C without cracking or decomposition.
-
Cost-Effective Solution – Extended service life and reduced maintenance downtime translate to lower total cost of ownership for industrial equipment.
Typical Applications for 857G-299 Dark Brown
| Industry | Typical Components & Considerations |
|---|---|
| Heat Exchange Equipment | Heat exchangers, condensers, and cooling systems requiring anti-corrosion and non-stick protection |
| Automatic Welding Equipment | Welding fixtures and tooling to prevent spatter adhesion |
| Automotive Components | Carburetor shafts, linkage devices, cruise control parts |
| Filtration Systems | Coated filter elements for reduced fouling and improved flow |
| Aerospace & Cryogenic | Liquid-oxygen transfer lines, low-temperature valves, aerospace fasteners – cryogenic applications down to -200°C |
| Oil & Gas | Fasteners, wellhead tools, subsea manifolds, downhole equipment – salt spray resistance up to 3000 hours |
| Mold & Tooling | Injection mold release, anti-stick for rubber and plastic processing |
| Food Processing Equipment | FDA-compliant applications where dark brown color is desired (subject to end-use verification) |
Material Advantages
The 857G-299 Dark Brown PTFE Topcoat is built on PTFE (polytetrafluoroethylene) , the lowest-surface-energy solid material known, which imparts:
-
Inherent Release & Lubricity – Reduces sticking, scrap rates, and cleaning downtime by up to 50% or more.
-
Chemical Inertness – Unaffected by nearly all chemicals, making it suitable for harsh chemical, marine, and subsea environments.
-
Thermal Stability – Maintains mechanical properties from deep-cold (-200°C) to high-heat (260°C) without embrittlement or softening.
-
Durability – Excellent abrasion and wear resistance, proven in long-term field use in oil & gas and aerospace sectors.
-
Corrosion Protection – Provides effective corrosion resistance at very thin film builds (as low as 0.8 mils), reducing material costs while maintaining performance.
Chemours, as the inventor of Teflon, brings over 80 years of fluoro-polymer expertise, ensuring batch-to-batch consistency, reliable supply, and full technical support.
Typical Properties
| Property | 857G-299 Dark Brown | Unit / Remarks |
|---|---|---|
| Product Type | PTFE Low-Temperature Topcoat | – |
| Color | Dark Brown | Consistent industrial finish |
| Carrier | Solvent-based | Superior leveling |
| Coating System | Topcoat (single coat or with primer) | – |
| FDA Compliance | Yes – food contact | When properly cured |
| Continuous Service Temp. | -200°C to +260°C (-328°F to 500°F) | – |
| Intermittent Service Temp. | Up to 320°C (608°F) | Short-term exposure |
| Surface Energy | 18-20 dynes/cm | Extremely low |
| Coefficient of Friction | 0.05 – 0.20 (static) | 70% lower than steel |
| Salt Spray Resistance | Up to 3000 hours | At 0.8 mils with proper basecoat |
| Chemical Resistance | Resists 98% H₂SO₄, 30% NaOH, organic solvents | Excellent inertness |
| Gloss Retention (10 yrs outdoor) | >80% | Outstanding weatherability |
| Application Method | Spray | Conventional or HVLP |
| Available Form | Liquid solvent-based | Ready to spray |
| Shelf Life | 18 months | Unopened, proper storage |
Important Notes on Typical Data:
-
Values listed are typical and sourced from Chemours official data sheets. They do not constitute binding product specification.
-
Batch‑to‑batch deviations may exist. For critical applications, validate performance with batch‑specific COA certificate.
-
Final performance depends on substrate preparation, application method, and curing conditions.
-
Chemours original TDS shall serve as definitive technical reference. Request the latest official TDS from our sales team.
Processing Guidelines
| Step | Process |
|---|---|
| Surface Preparation | Degrease then abrasive blasting (or equivalent) to achieve proper surface profile for adhesion |
| Primer Application | Apply compatible Teflon primer (e.g., 855G-021) if required – follow recommended cure schedule |
| Topcoat Application | Apply 857G-299 Dark Brown PTFE Topcoat via conventional or HVLP spray |
| Curing | Cure per Chemours recommended schedule; typical cure temperatures range from 725°F – 800°F (385°C – 427°C) depending on system |
Critical Processing Warnings:
-
Surface Preparation: Proper surface preparation is critical for adhesion. Ensure surfaces are clean, dry, and properly roughened.
-
Primer Selection: The 857G-299 Dark Brown PTFE Topcoat can be used as a single coat or with compatible primers. For enhanced corrosion protection or specific substrates, consult our technical team.
-
Curing: Cure time depends on part mass and oven characteristics. Always verify with test pieces.
-
Storage: Store in original, sealed containers in a cool, dry place away from direct sunlight.
-
Shelf Life: 18 months in unopened, clean, dry storage.
Related Products
-
Explore Teflon PTFE Coatings – Browse all Teflon industrial coating options
-
About Our Company – Learn more about our supply capabilities and quality assurance
External Reference
For authoritative information, please refer to the following official resources:
-
Chemours Official Website – Corporate headquarters and product portfolio overview
-
Teflon Industrial Coatings Product Center – Official technical literature and application guides
Technical Documents
| Document Type | Description & Source |
|---|---|
| Chemours Official TDS | Complete physical, thermal, and mechanical properties of 857G-299 Dark Brown, issued by Chemours original |
| Chemours Official SDS | GHS‑compliant chemical safety documentation, original Chemours document |
| Chemours Distributor Authorization Certificate | Proof of our authorized‑distributor qualification for Chemours Teflon series, available upon request |
| FDA Compliance Declaration | FDA food contact compliance statement |
| COA (Certificate of Analysis) | Batch‑specific quality certification |
| Application & Usage Guide | Detailed application guidance for low-temperature coating systems |
Request any document above by:
-
Email:
ruiqingchem@gmail.com -
Online form: Our contact page
We reply within one working business day. Please clearly state product (857G-299 Dark Brown) and document type you require.
FAQ
Q1: What is the 857G-299 Dark Brown PTFE Topcoat and what is it used for?
A: The 857G-299 Dark Brown PTFE Topcoat is a solvent-based PTFE topcoat from the Teflon industrial coatings portfolio. It provides excellent non-stick release, low friction, and chemical resistance at temperatures from -200°C to 260°C. It is widely used in heat exchangers, automatic welding equipment, aerospace cryogenic components, automotive parts, and oil & gas applications.
Q2: What is the temperature range of the 857G-299 Dark Brown PTFE Topcoat?
A: The continuous service temperature range of the 857G-299 Dark Brown PTFE Topcoat is -200°C to +260°C (-328°F to 500°F), with intermittent tolerance up to 320°C (608°F).
Q3: Is the 857G-299 Dark Brown PTFE Topcoat FDA compliant?
A: Yes. PTFE coatings in the Teflon series, including the 857G-299 Dark Brown PTFE Topcoat, can be FDA compliant when properly cured. Please verify compliance for your specific end-use application.
Q4: What is the recommended application method for the 857G-299 Dark Brown PTFE Topcoat?
A: The 857G-299 Dark Brown PTFE Topcoat is applied via spray (conventional or HVLP) as a topcoat. It can be used as a single coat or with a compatible primer system.
Q5: How does the 857G-299 Dark Brown PTFE Topcoat perform in corrosion resistance?
A: The 857G-299 Dark Brown PTFE Topcoat can achieve up to 3000 hours of salt spray resistance at a thickness of only 0.8 mils, depending on the basecoat system. It is also resistant to hydraulic fluids and aggressive cleaning products.
Q6: Can I purchase the 857G-299 Dark Brown PTFE Topcoat and what is lead time?
A: Yes. Submit your inquiry via email or our quick form. Regular orders ship within 7-10 working days after payment confirmation. Large-volume or urgent orders can be negotiated separately.
Q7: What are the limitations of the 857G-299 Dark Brown PTFE Topcoat?
A: PTFE coatings require proper surface preparation for optimal adhesion. Cure temperatures are high (725°F – 800°F / 385°C – 427°C). Always verify compatibility with your specific operating conditions before full production.
CTA (Call to Action)
Ready to order the 857G-299 Dark Brown PTFE Topcoat?
To get precise quotation and professional technical support, please share these details:
-
Required quantity (kg)
-
Destination port or delivery address
-
Target application (heat exchanger, aerospace, oil & gas, mold release, etc.)
-
Primer requirement (if applicable)
-
Document requirement (TDS, SDS, FDA compliance, COA, etc.)
Sample Policy:
-
Samples are for laboratory validation tests only, not for production use.
-
Buyer bears international sample‑shipping freight.
-
If bulk‑product performance deviates from sample reference, Chemours official TDS serves as authoritative benchmark.
Take action now:
-
📧 Email Us –
ruiqingchem@gmail.com -
📝 Send Inquiry – Use our quick inquiry form
-
💬 Live Chat – Click bottom‑right chat widget to speak directly with our team
After-Sales Support
| Service | Details |
|---|---|
| Quality Inspection Period | All quality‑related claims must be submitted within 7 working‑days after delivery, supported by test data and photographic evidence. |
| Return / Exchange Policy | Confirmed product defects caused by our side trigger replacement or refund. Terms and conditions apply. |
| Logistics Damage | Report shipping damage directly to carrier immediately upon goods receipt. We assist with claim‑document preparation. |
| Technical Support | Remote technical guidance available. On‑site coating application troubleshooting service can be arranged upon special request. |
| Export Documentation | We supply standard export documents: commercial invoice, packing list, bill of lading, COA. Additional compliance certificates (e.g., FDA compliance) can be provided on request. |
Disclaimer
DISCLAIMER: All technical data is referenced from original Chemours typical values for the 857G-299 Dark Brown PTFE Topcoat. Our company acts as authorized distributor/trader rather than original manufacturer. Final performance depends on substrate preparation, application method, and curing conditions. Buyers shall independently validate product suitability for individual applications. Our firm bears no liability for coating failure caused by improper application or improper usage. Always reference latest Chemours official TDS of the 857G-299 Dark Brown PTFE Topcoat as definitive specification.
