描述
420G-703 Black is a solvent-based 420G-703 Black Primer 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/.
420G-703 Black is a solvent-based primer specifically engineered for aluminum and aluminum alloy substrates when paired with PFA/FEP topcoat systems. Its core function is to serve as a robust “bridge” between the substrate and the topcoat, dramatically enhancing adhesion and fundamentally resolving coating delamination issues, ensuring long-term durability of the coating system.
Primers effectively prepare surfaces before coating application by creating a protective layer over the substrate that decreases the porosity of the coating so that it is not absorbed by the substrate. The 420G-703 primer is FDA compliant for food contact applications per 21CFR, making it suitable for food processing equipment, industrial bakeware, and other food‑contact uses. The solvent-based formulation provides excellent wetting, leveling, and adhesion properties for demanding industrial applications. The black pigmented finish provides consistent industrial appearance while ensuring proper coverage verification.
With regular stock availability, we support both trial orders and large‑volume bulk shipments for chemical processing, food equipment, industrial bakeware, automotive components, and other demanding industrial applications.
Key Features of 420G-703 Black Primer
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FDA Food Contact Compliant – Approved for food contact applications per 21CFR, suitable for food processing equipment, bakeware, and other food‑contact uses.
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Specifically Designed for Aluminum – Engineered for aluminum and aluminum alloy substrates when paired with PFA/FEP topcoat systems.
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Superior Intercoat Adhesion – Acts as a robust “bridge” between the substrate and FEP/PFA topcoats, fundamentally preventing coating delamination and ensuring long-term durability.
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Solvent-Based Formulation – Provides excellent wetting, leveling, and adhesion properties for demanding industrial applications.
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Excellent PFA/FEP Topcoat Compatibility – Suitable for use with FEP and PFA topcoat systems (liquid or powder forms).
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Black Finish – Black pigmented finish provides consistent industrial appearance and ensures proper coverage verification.
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Enhanced Durability – By improving adhesion, the primer significantly extends the overall service life of the coating system.
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Improved Corrosion Resistance – Provides additional rust and chemical corrosion protection, forming a more comprehensive protective system when combined with the topcoat.
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Optimized Surface Preparation – A smooth, well‑adhered primer layer allows the subsequent FEP/PFA topcoat to distribute more evenly, resulting in better smoothness, nonstick properties, and appearance.
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Broad Substrate Compatibility – Can be applied to carbon steel, stainless steel, and aluminum.
Typical Applications for 420G-703 Black
| Industry | Typical Components & Considerations |
|---|---|
| Chemical Processing | Pumps, tanks, valves, vessels, reactors, pipelines – resists strong acids and alkalis, ensures equipment stability and service life |
| Food Processing Equipment | Food contact equipment, conveyor components, processing machinery – FDA compliant applications |
| Industrial Bakeware | Bread pans, sheet pans, baking molds – requires durable, food‑grade nonstick coating system |
| Cookware | High‑performance nonstick cookware – ensures coating integrity under scraping and thermal shock |
| Semiconductor Equipment | High‑purity components, circuit board baking trays – stable at high temperatures, no harmful substance release |
| Plastic & Rubber Industry | Rollers, shoe molds, rubber glove molds, tire molds – prevents sticking, extends mold life |
| Textile Industry | Rollers for yarn sizing – prevents high‑viscosity chemical slurry adhesion |
| Medical Devices | Surgical instruments, infusion tubes – reduces friction, improves durability |
| Aerospace | Aircraft engine components, fuel system piping – stable performance in extreme environments |
| Automotive Components | Seals, bearings – provides lubrication while ensuring strong coating‑to‑metal bonding |
| General Industrial | Components requiring FEP/PFA nonstick properties with enhanced adhesion and durability |
Material Advantages
420G-703 Black Primer is a solvent‑based FEP/PFA primer that delivers:
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Superior Adhesion – Primers effectively prepare surfaces before coating application, creating a protective layer over the substrate that decreases porosity and prevents the coating from being absorbed. The primer acts as a “bridge” between the substrate and the topcoat, ensuring the entire coating system remains firmly bonded and preventing delamination.
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Food Safety – FDA compliant for food contact per 21CFR, enabling use in food processing and food‑contact applications.
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Solvent‑Based Performance – The solvent‑based carrier provides excellent wetting, leveling, and adhesion properties for demanding industrial applications.
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Chemical Inertness – Fluoropolymer‑based formulation provides excellent resistance to chemicals and corrosion.
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Thermal Stability – Maintains performance at continuous service temperatures up to 260°C (500°F).
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Enhanced Durability – Provides proper adhesion, increased durability, and additional protection to the substrate.
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Optimized Surface – A smooth, well‑adhered primer layer allows the subsequent FEP/PFA topcoat to distribute more evenly, resulting in better smoothness, nonstick properties, and appearance.
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Broad Substrate Compatibility – Applicable to carbon steel, stainless steel, and aluminum.
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 | 420G-703 Black | Unit / Remarks |
|---|---|---|
| Product Type | Solvent‑Based FEP/PFA Primer | – |
| Color | Black | – |
| Carrier | Solvent | – |
| Coating System | Primer | FEP/PFA topcoat systems |
| FDA Compliance | Yes – Food Contact per 21CFR | – |
| Solid Content | 23.5 – 30.6% | – |
| Volume Solids | 15.8% | – |
| Coverage | 5.1 m²/L | At 25 µm DFT |
| Viscosity | 775 – 1,110 cP | – |
| Density | 1.14 kg/L (9.5 lbs/gal) | – |
| Recommended DFT | 10 – 15 µm (0.4 – 0.6 mil) | – |
| Recommended Substrates | Aluminum, carbon steel, stainless steel | – |
| CAS Number | 25067-11-2 | – |
| Application Method | Spray | – |
| Packaging | 4 kg, 5 kg, 20 kg pails | – |
| Shelf Life | 18 months | Unopened, proper storage |
Important Notes on Typical Data:
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Values listed are typical and sourced from Chemours official data sheets. They do not constitute binding product specification.
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Physical constants are averages only and may vary up to ±5% of the values shown.
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Final performance depends on substrate preparation, application method, and curing conditions.
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Chemours original TDS shall serve as definitive technical reference. Request the latest official TDS from our sales team.
Processing Guidelines
| Step | Process |
|---|---|
| Substrate | Carbon steel, stainless steel, aluminum |
| Surface Preparation | Degrease then abrasive blasting to achieve proper surface profile for adhesion. For carbon steel, best results are achieved with grit blasting, and spraying should be done as soon as possible after blasting. Recommended roughness: 0.2‑0.3 mil (4‑8 µm) |
| Coating Preparation | Bring to room temperature. Mix thoroughly until homogeneous and filter through 100 mesh (approx. 146 µm) stainless steel screen |
| Thinning | If needed, dilute with T-8718 (N-Methyl-2-pyrrolidone) at 1-2% by volume |
| Primer Application | Apply via conventional or HVLP spray |
| Recommended DFT | 10 – 15 µm (0.4 – 0.6 mil) |
| Drying | Force dry at 160°C for 10 minutes |
| Topcoat Application | Apply compatible FEP or PFA topcoat over dried primer. If topcoat is liquid, apply at the same drying temperature; if topcoat is powder, can be applied directly or after drying |
| Curing | Follow topcoat manufacturer‘s recommended schedule. Sintering temperature depends on the topcoat being used |
| Storage | Roll containers for 30 minutes at 30 RPM before use. Store at normal room temperature 18‑24°C. Protect from heat, sparks, and open flame |
Critical Processing Warnings:
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Primer as Foundation: 420G-703 serves as the foundational layer for FEP/PFA topcoat systems. For some surfaces, it‘s recommended to use a primer before applying Teflon FEP coatings.
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Do Not Apply as Single Coat: This primer is designed for use with PFA and FEP topcoats and should not be applied as a single coat system.
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Surface Preparation: Proper surface preparation is critical for adhesion. Ensure surfaces are clean, dry, and properly roughened.
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Safety Precautions: 420G-703 is a flammable solvent‑based product. Keep away from heat, sparks, and open flame. Use explosion‑proof equipment. Avoid breathing mist or vapors. Use only outdoors or in a well‑ventilated area. Wear protective gloves, protective clothing, eye protection, and face protection.
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Storage: Store in original, sealed containers in a cool, dry place away from direct sunlight at 18‑24°C.
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Shelf Life: 18 months in unopened, clean, dry storage.
Related Products
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Explore Teflon PTFE Coatings – Browse all Teflon industrial coating options
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850G-300 Clear – Teflon PTFE Acid Primer – Acid primer for PTFE, PFA, and FEP topcoat systems
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953G-506 Dark Violet – FEP Waterborne Primer – FEP primer for multi-coat food contact systems
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About Our Company – Learn more about our supply capabilities and quality assurance
External Reference
For authoritative information, please refer to the following official resources:
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Chemours Official Website – Corporate headquarters and product portfolio overview
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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 420G-703 Black, 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 per 21CFR |
| COA (Certificate of Analysis) | Batch‑specific quality certification |
| Application & Usage Guide | Detailed application guidance for solvent‑based primer systems |
Request any document above by:
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Email:
ruiqingchem@gmail.com -
Online form: Our contact page
We reply within one working business day. Please clearly state product (420G-703 Black) and document type you require.
FAQ
Q1: What is 420G-703 Black and what is it used for?
A: 420G-703 Black is a solvent‑based FEP/PFA primer from the Teflon industrial coatings portfolio. It is specifically engineered for aluminum and aluminum alloy substrates when paired with PFA/FEP topcoat systems. It serves as the foundational layer, providing exceptional adhesion between the substrate and fluoropolymer topcoats.
Q2: Is 420G-703 Black FDA compliant?
A: Yes. 420G-703 is FDA compliant for food contact applications per 21CFR, suitable for food processing equipment, bakeware, and other food‑contact uses.
Q3: Can 420G-703 Black be used as a single coat?
A: No. 420G-703 is a primer designed for use with PFA and FEP topcoats and should not be applied as a single coat system.
Q4: What topcoats are compatible with 420G-703 Black?
A: 420G-703 is suitable for use with FEP and PFA topcoat systems in both liquid and powder forms. The primer offers excellent intercoat adhesion with these topcoats.
Q5: What is the recommended film build for 420G-703 Black?
A: The recommended DFT is 10 – 15 µm (0.4 – 0.6 mil) .
Q6: What substrates can 420G-703 Black be applied to?
A: It can be applied to carbon steel, stainless steel, and aluminum. It is specifically engineered for aluminum and aluminum alloy substrates.
Q7: What is the coverage of 420G-703 Black?
A: Coverage is 5.1 m²/L at 25 µm DFT with 100% application efficiency.
Q8: What is the viscosity of 420G-703 Black?
A: Viscosity is 775 – 1,110 cP.
Q9: What is the shelf life of 420G-703 Black?
A: The shelf life is 18 months in unopened, proper storage at 18‑24°C. Roll containers for 30 minutes at 30 RPM before use.
Q10: What is the lead time for orders?
A: Regular orders ship within 7‑10 working days after payment confirmation. Large‑volume or urgent orders can be negotiated.
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Sample Policy:
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Samples are for laboratory validation tests only, not for production use.
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Buyer bears international sample‑shipping freight.
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If bulk‑product performance deviates from sample reference, Chemours official TDS serves as the authoritative benchmark.
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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 troubleshooting can be arranged upon special request. |
| Export Documentation | We supply commercial invoice, packing list, bill of lading, COA, and additional compliance certificates (e.g., FDA) on request. |
