Modified PTFE Sheet

Discover Kaxite's Modified PTFE Sheet, a premium solution for demanding industrial applications. Engineered with enhanced durability and chemical resistance, this sheet excels in high-friction environments, reducing wear and extending equipment life. Ideal for manufacturers, engineers, and maintenance teams, it delivers reliable performance in harsh conditions, ensuring smooth operations and peace of mind. Stand out with Kaxite's superior material innovation and proven quality. Experience the difference today!

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Product Description

China Modified PTFE Sheet – Enhanced Sealing Performance

Modified PTFE sheet from Kaxite delivers superior sealing reliability with reduced creep relaxation, excellent chemical resistance, and improved bolt torque retention. Engineered with advanced fillers (silica, glass microspheres, barium sulfate, graphite), our modified PTFE sheets overcome the cold‑flow limitations of conventional PTFE while maintaining a wide operating temperature range from -268°C to +260°C. Available in multiple grades (MF4350, MF4354, MF4351, MF4353) with color‑coded compositions to suit diverse industrial applications.

✅ Reduced Creep ✅ -268°C to +260°C ✅ Chemical Resistant ✅ 4 Grades Available

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Temp. Range

-268°C to +260°C

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Compositions

Silica / Glass / BaSO₄ / Graphite

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Thickness

1/16″, 1/8″ & custom

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Sheet Size

60″×60″ / 70″×70″

Why Choose Kaxite Modified PTFE Sheet

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Reduced Creep Relaxation

Unique formulation minimizes cold flow, ensuring long‑term bolt load retention and reliable sealing over time.

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Exceptional Chemical Resistance

PTFE matrix provides resistance to virtually all chemicals, acids, and solvents – ideal for aggressive media.

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Multiple Grades for Specific Needs

Four formulations (silica, glass, barium sulfate, graphite) optimize performance for sealing, friction, or electrical applications.

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Cost‑Effective & Tighter Seal

Improved sealability reduces product loss and emissions, offering significant cost savings over conventional PTFE.

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Wide Temperature Range

Sustains continuous service from cryogenic -268°C up to +260°C, suitable for extreme thermal environments.

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Non‑Flammable & Bacterial‑Resistant

Will not support flame or bacterial growth – safe for food, pharmaceutical, and cleanroom applications.

Technical Specifications – Modified PTFE Sheet Grades

Property	MF4350 (Fawn)	MF4354 (Blue)	MF4351 (Off-white)	MF4353 (Black)
Composition	PTFE with silica	PTFE with glass microspheres	PTFE with barium sulfate	PTFE with graphite
Temperature (min / max)	-268°C / +260°C	-268°C / +260°C	-268°C / +260°C	-268°C / +260°C
Pressure (bar)	75	55	55	75
Sealability (cm³/s) GB/T9129	<1×10⁻³	<1×10⁻³	<1×10⁻³	<1×10⁻³
Creep Relaxation (%) ASTM F38	20	35	18	35
Compressibility (%) ASTM F36	10–15	25–40	5–12	7–19
Recovery (%) ASTM F36	>21	>25	>35	>35
Tensile Strength (N/mm²) ASTM F152	13	12	11	11
Flammability	Will not support flame
Bacterial Growth	Will not support

Available sizes: 60″×60″ (1524×1524 mm), 70″×70″ (1778×1778 mm) and custom dimensions. Thickness: 1/16″, 1/8″, and other thicknesses upon request. Contact our engineering team for custom formulations.

Compliance & Test Data

ASTM F36 – Compressibility & Recovery

All grades meet or exceed standard requirements, with recovery up to >35% ensuring long‑term sealing integrity.

ASTM F38 – Creep Relaxation

Low creep values (18–35%) reduce bolt torque loss, extending service life and reducing maintenance intervals.

ASTM F152 – Tensile Strength

Tensile strength ranging from 11 to 13 N/mm² ensures robust mechanical performance under stress.

GB/T9129 – Sealability

Sealability below 1×10⁻³ cm³/s guarantees leak‑tight performance in critical applications.

Full test reports and material certifications are available upon request. Kaxite maintains ISO 9001:2015 certified quality management.

Quality Assurance – Authoritative Manufacturing

As a leading modified PTFE sheet supplier in China, Kaxite combines 25+ years of PTFE compounding expertise with an ISO 9001:2015 certified quality system. Our proprietary modified PTFE formulations are engineered to overcome the limitations of conventional PTFE, delivering enhanced creep resistance, superior sealability, and cost‑effective performance. We provide full material certifications, test reports, and traceability for every batch.

✔ ISO 9001:2015 – full traceability and quality control
✔ CE compliant – meets European safety standards
✔ FDA compliant – suitable for food contact applications
✔ 100% virgin PTFE base – no regrind or recycled material
✔ Export to 40+ countries – trusted global reputation

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Kaxite Sealing

China Modified PTFE Manufacturer

ISO 9001 25+ Years 40+ Countries

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Industry Applications & Case Examples

🏭 Chemical Processing

MF4350 (silica‑filled) used in aggressive acid and solvent service – proven in petrochemical refineries with excellent chemical resistance.

⚡ Power Generation

MF4353 (graphite‑filled) provides high thermal conductivity and low friction for turbine and compressor sealing.

🍷 Food & Beverage

MF4351 (barium sulfate) offers excellent sealability and FDA compliance for sanitary processing equipment.

🔧 General Industry

MF4354 (glass microspheres) provides enhanced dimensional stability for flange gaskets in moderate pressure applications.

For tailored grade selection, consult our technical specialists.

How to Order Modified PTFE Sheets

To receive a quick quotation and delivery schedule, provide the following details when you send inquiry.

① Grade

MF4350 / MF4354 / MF4351 / MF4353

② Thickness

1/16″, 1/8″ or custom

③ Sheet Size

60″×60″ / 70″×70″ / custom

④ Quantity

Number of sheets

⑤ Shipping Term

FOB Ningbo, CIF, or EXW

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Frequently Asked Questions

Q: What is the difference between modified PTFE and pure PTFE sheet?

A: Modified PTFE incorporates specialized fillers to reduce creep relaxation, improve compressibility/recovery, and enhance sealability while maintaining the chemical resistance of pure PTFE.

Q: Which grade should I choose for high‑pressure applications?

A: MF4350 (silica) and MF4353 (graphite) are rated for 75 bar pressure, making them suitable for higher pressure services.

Q: Is modified PTFE sheet FDA compliant?

A: Yes, all grades are manufactured from FDA‑compliant PTFE resin and are suitable for food and pharmaceutical contact applications.

Q: Can you provide custom thicknesses or sizes?

A: Absolutely. Kaxite offers custom thicknesses up to 1/4″ and larger sheet dimensions. Contact our engineering team for details.

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Contact Info

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Address

No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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Tel

0086-574-87527771
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Email

[email protected]