851G-221 Grey – Teflon PTFE High Film Build Waterborne Topcoat

描述

851G-221 Grey is a high film build PTFE (polytetrafluoroethylene) waterborne 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.

This grey topcoat is part of a two-coat or three-coat system and is specifically designed for heavy-duty applications requiring thicker film build. It provides outstanding non-stick release properties, low coefficient of friction, and excellent thermal stability at continuous service temperatures up to 260°C (500°F) .

PTFE industrial coatings offer the highest operating temperature of any fluoropolymer (260°C / 500°F), the lowest coefficient of friction, and good abrasion and chemical resistance. The 851G-221 grade is formulated for high film build with a recommended DFT of 0.8 – 3.0 mils per coat and a maximum total film build of 8.0 mils.

With regular stock availability, we support both trial orders and large‑volume bulk shipments for automotive, aerospace, industrial, chemical processing, and heavy-duty non-stick applications.

Key Features of 851G-221 Grey

• High Film Build – Recommended DFT of 0.8 – 3.0 mils per coat; maximum total film build of 8.0 mils

• Excellent Non-Stick Release – Provides outstanding release properties for heavy-duty mold and industrial applications

• Low Coefficient of Friction – Reduces friction and wear in moving parts

• High Temperature Resistance – Continuous service temperature up to 260°C (500°F) 

• Grey Color – Easy identification and process control for industrial applications

• Waterborne Formulation – Low VOC emissions for environmentally friendly processing

• Excellent Chemical Resistance – Resists most acids, bases, and solvents

• Good Abrasion Resistance – Durable for demanding heavy-duty applications

• Part of Multi-Coat System – Designed for use with recommended primers

• Thermal Stability – Maintains performance at elevated temperatures

• Maximum Total Film Build – Up to 203 microns (8.0 mils) total thickness

Typical Applications for 851G-221 Grey

Explore our full range of Teflon industrial coatings for more product options.

Material Advantages of 851G-221 Grey

What makes 851G-221 Grey the preferred choice for heavy-duty PTFE non-stick topcoat applications? Below are its core practical advantages:

High Film Build for Maximum Durability
851G-221 is specifically formulated as a high film build topcoat, allowing application of thicker coatings for enhanced durability and protection. With a recommended DFT of 0.8 – 3.0 mils per coat and total film build up to 8.0 mils, this grade provides superior wear resistance and extended service life in demanding applications.

Proven PTFE Performance
As part of the Teflon PTFE coatings family, 851G-221 Grey offers the lowest coefficient of friction of any solid material and excellent non-stick release that has been trusted for decades in industrial, automotive, and aerospace applications.

High Temperature Stability
With continuous service temperature up to 260°C (500°F) , this coating maintains its non-stick properties and mechanical integrity in high-temperature environments where conventional coatings would fail.

Grey Color for Process Control
The grey color provides easy visual identification of coated parts and aids in process quality control in industrial environments.

Waterborne, Low VOC
The waterborne formulation provides a more environmentally friendly alternative to solvent-based systems, with lower VOC emissions and easier handling.

Chemical & Abrasion Resistance
851G-221 Grey offers good abrasion resistance and excellent chemical resistance, protecting substrates from wear and corrosion in harsh industrial environments.

Technical Data

Important Notes on Typical Data:

1. Values listed are typical and sourced from Chemours official data sheets. They do not constitute binding product specification.

2. Batch‑to‑batch deviations may exist. For critical applications, validate performance with batch‑specific COA certificate.

3. Final performance depends on substrate preparation, application method, and curing conditions.

4. Chemours original TDS shall serve as definitive technical reference. Request the latest official TDS from our sales team.

Processing Guidelines

Recommended Primers:

• For non-FDA conforming systems, use 850G-204, 850G-314, or 850G-321 as a primer (mix with 850-7799)

• 855G-021, 857G-030, or 857G-040 primers are typically used for FDA conforming systems

Critical Processing Warnings:

• Surface Preparation: Proper surface preparation is critical for adhesion. Ensure surfaces are clean, dry, and properly roughened.

• Primer Selection: Select appropriate primer based on your application requirements and substrate.

• Curing: Do not exceed 750°F. Cure time depends on part mass and oven characteristics.

• 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

• 851G-214 Green – PTFE Topcoat – Standard film build, FDA compliant, green color

• About Our Company – Learn more about our supply capabilities and quality assurance

Technical Documents

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 (851G-221 Grey) and document type you require.

FAQ

Q1: What is 851G-221 Grey and what is it used for?
A: 851G-221 Grey is a high film build PTFE (polytetrafluoroethylene) waterborne topcoat from the Teflon industrial coatings portfolio. It is designed for use in two-coat or three-coat systems to provide outstanding non-stick release, low friction, and excellent thermal stability at temperatures up to 260°C (500°F). It is widely used in automotive, aerospace, heavy-duty mold release, industrial bakeware, chemical processing, and general industrial applications where high film build and maximum durability are required.

Q2: What is the difference between 851G-221 Grey and 851G-214 Green?
A: Both are PTFE waterborne topcoats with the same service temperature (260°C / 500°F). The key differences are: 851G-221 Grey is a high film build grade (DFT up to 3.0 mils per coat, total up to 8.0 mils), not FDA compliant, and grey in color. 851G-214 Green is a standard film build grade (DFT 0.5 – 1.5 mils per coat, total up to 3.0 mils) and is FDA compliant for food contact. Choose 851G-221 for heavy-duty industrial applications requiring thicker coatings; choose 851G-214 for food contact applications.

Q3: What primers are compatible with 851G-221 Grey?
A: For non-FDA conforming systems, use 850G-204, 850G-314, or 850G-321 as a primer (mix with 850-7799).

Q4: Is 851G-221 Grey FDA compliant?
A: No. 851G-221 Grey is not FDA compliant for food contact applications. For FDA compliant PTFE topcoats, consider 851G-214 (green) or 852G-201 (clear).

Q5: What is the maximum film build of 851G-221 Grey?
A: The maximum total film build is 8.0 mils (203 microns). Recommended DFT per coat is 0.8 – 3.0 mils.

Q6: What is the maximum service temperature?
A: The continuous service temperature is 260°C (500°F). Cure temperature is 399°C (750°F).

Q7: What is the coverage of 851G-221 Grey?
A: Coverage is approximately 458 ft²/gal at 1 mil DFT.

Q8: What is the recommended application method?
A: 851G-221 Grey is applied via conventional or HVLP spray as part of a multi-coat system.

Q9: Can I purchase this product and what is lead‑time?
A: Yes. Submit your inquiry via our quick inquiry form or email ruiqingchem@gmail.com, specify quantity, application and delivery address. Regular orders ship within 7‑10 working days after payment confirmation. Large‑volume or urgent orders can be negotiated separately.

Q10: What are limitations?
A: PTFE coatings require proper surface preparation and primer application for optimal adhesion. This grade is not FDA compliant for food contact. Always verify compatibility with specific operating conditions before use.

CTA (Call to Action)

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To get precise quotation and professional technical support, please share these details:

• Required quantity (kg)

• Destination port or delivery address

• Target application (automotive, aerospace, mold release, industrial bakeware, etc.)

• Primer selection (850G-204, 850G-314, or 850G-321)

• Coating system requirement (2-coat or 3-coat system)

• Document requirement (TDS, SDS, 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.

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After-Sales Support

Disclaimer

DISCLAIMER: All technical data is referenced from original Chemours typical values for 851G-221 Grey. 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 851G-221 Grey as definitive specification.