Chemical Processing
Flange gaskets for pipes, pumps, valves and vessels handling aggressive acids, alkalis and solvents.
Industrial PTFE Gasket
PTFE Gasketfor Chemical Resistance, Low Friction & High-Temperature Sealing
PTFE gaskets manufactured from virgin or filled PTFE, offering outstanding chemical resistance, wide temperature range, low friction and excellent sealing performance for flanges, pipes, vessels and industrial equipment. Available as cut or molded gaskets with custom dimensions.
Virgin & Filled PTFE
Chemical Resistant
ISO 9001 & RoHS
OEM & Bulk Orders
PTFE Gasket
High-Performance Fluoropolymer Gasket
OEM
Custom Supply
Our PTFE Gaskets
PTFE Gasket Products
Explore PTFE gaskets in virgin and filled grades for industrial sealing applications. Available as cut or molded gaskets with custom inner diameter, outer diameter and thickness to suit your flange or equipment requirements.
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PTFE gasket
High Temperature Resistant PTFE Flange Gasket
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PTFE gasket
Oil Resistant And Wear Resistant PTFE Gasket
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PTFE gasket
Expanded PTFE Gasket
PTFE Gasket Supplier
PTFE Gaskets for Chemical, Thermal & Pressure Sealing
PTFE gaskets are sealing components manufactured from polytetrafluoroethylene (PTFE) resin, either by cutting from skived or molded sheet, or by compression molding into the desired shape. They are widely used in chemical processing, pharmaceutical, food and other industries where broad chemical compatibility and temperature resistance are required.
PTFE gaskets are available in virgin (unfilled) grade for maximum chemical resistance and electrical insulation, and in filled grades (glass fiber, carbon, graphite, bronze, etc.) to improve creep resistance, compressive strength and thermal conductivity for more demanding service conditions. Custom sizes and non-standard shapes can be produced according to drawings or samples.
We supply PTFE gaskets for overseas distributors, industrial buyers, gasket fabricators, maintenance companies and OEM customers, with different grades, dimensions, thicknesses and packaging available according to specification.
Outstanding Chemical Resistance
PTFE is virtually inert to almost all chemicals, acids, solvents and alkalis.
Wide Temperature Range
Continuous service from -180°C to +260°C, suitable for cryogenic and high-temperature applications.
Low Friction & Non-Stick
PTFE has one of the lowest coefficients of friction, reducing wear and adhesion.
Custom Dimensions
Available in any inner/outer diameter and thickness to match your flange or equipment.
Material Advantages
Why Choose PTFE Gaskets?
PTFE gaskets combine outstanding chemical resistance, wide temperature capability, low friction and excellent sealing performance for demanding industrial applications.
01
Chemical Inertness
PTFE gaskets are resistant to virtually all industrial chemicals, making them ideal for aggressive media including strong acids, bases and solvents.
02
Wide Temperature Range
PTFE gaskets maintain their sealing properties from approximately -180°C to +260°C, covering cryogenic through high-temperature services.
03
Low Creep Relaxation (Filled Grades)
Filled PTFE grades (glass, carbon, graphite) exhibit improved creep resistance, maintaining bolt load and seal integrity over time.
04
Low Friction & Non-Stick
PTFE's non-stick surface prevents gasket adhesion to flange faces, facilitating easy removal and replacement.
05
Excellent Dielectric Properties
PTFE gaskets provide excellent electrical insulation, suitable for applications involving electrical isolation.
06
B2B Industrial Supply
Suitable for industrial distributors, OEM customers, maintenance companies and bulk purchasing programs.
Technical Specifications
PTFE Gasket Specifications
Technical properties depend on the PTFE grade (virgin or filled), manufacturing method and gasket dimensions. The values below are typical for standard virgin PTFE gaskets and should be confirmed for the selected grade before ordering.
| Product | PTFE Gasket (Virgin / Filled) |
|---|---|
| Material | Virgin PTFE or filled PTFE (glass fiber, carbon, graphite, bronze, MoS₂ etc. depending on grade) |
| Color | White / Natural for virgin PTFE; filled grades may be gray, black, brown or other colors |
| Density | Approximately 2.1–2.3 g/cm³ for virgin PTFE; filled grades may vary depending on filler type and content |
| Temperature Range | Continuous service: -180°C to +260°C; short-term tolerance up to +300°C depending on application and load |
| Tensile Strength | ≥ 15 MPa for virgin PTFE (typical 25–35 MPa); filled grades may vary |
| Hardness | Shore D 50–65 for virgin PTFE; filled grades may be higher |
| Compressibility | 0.5–2% at 35 MPa for virgin PTFE; filled grades may vary |
| Recovery | ≥ 20% typical for virgin PTFE; filled grades may vary |
| Chemical Resistance | Virtually inert to all chemicals except molten alkali metals, elemental fluorine and some fluorine compounds at elevated temperatures |
| Water Absorption | < 0.01% (virtually zero) |
| Gasket Thickness | 0.5 mm to 10 mm typical; common thicknesses: 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm. Custom thicknesses available |
| Gasket Dimensions | Custom inner diameter and outer diameter according to flange or equipment; typical OD range from 10 mm to 2000 mm or larger |
| Supply Form | Cut gaskets, molded gaskets, or rings; customized packaging available subject to specification |
| Compliance | ISO 9001 quality management and RoHS compliance documentation available where applicable; FDA compliant grades available for food contact applications |
Gasket Dimensions
PTFE Gasket Size Chart
PTFE gaskets are manufactured to custom inner diameters, outer diameters and thicknesses. The following table lists common thicknesses with typical applications. Inner and outer diameters are produced according to flange or equipment dimensions.
| Thickness | Typical OD Range | Typical Application | Grade |
|---|---|---|---|
| 0.5 mm | 10–500 mm | Thin flange gaskets, low bolt load sealing | Virgin PTFE |
| 1.0 mm | 10–1000 mm | Standard flange gaskets, chemical service | Virgin / Filled PTFE |
| 1.5 mm | 10–1500 mm | General sealing, uneven flange surfaces | Virgin / Filled PTFE |
| 2.0 mm | 10–2000 mm | Heavy-duty gaskets, high pressure | Virgin / Filled PTFE |
| 3.0 mm | 20–2000 mm | Thick gaskets, large flanges, reactors | Virgin / Filled PTFE |
| 4.0 mm | 20–2000 mm | Very thick gaskets, special equipment | Filled PTFE |
| 5.0 mm | 20–2000 mm | Specialty seals, machined gaskets | Filled PTFE |
| 6.0 mm | 20–2000 mm | Heavy compression service | Filled PTFE |
* Reference thicknesses and typical outer diameter ranges are shown for procurement guidance. All dimensions are customizable. Inner diameters are produced according to flange bore or pipe size. Custom metric and inch dimensions are available subject to specification.
Industrial Applications
PTFE Gasket Applications
PTFE gaskets are used across a wide range of industries where chemical resistance, temperature stability and low friction are essential for reliable sealing.
Pharmaceutical & Food
FDA-compliant PTFE gaskets for sanitary piping, reactor seals and food processing equipment.
High-Temperature Service
PTFE gaskets for steam, hot oil and thermal fluid systems operating up to +260°C.
Electrical Insulation
Dielectric gaskets for electrical isolation in transformers, switchgear and equipment.
General Industrial Sealing
Custom PTFE gaskets for pumps, compressors, heat exchangers and general machinery.
Custom Gasket Fabrication
Stock PTFE sheet or custom-cut gaskets for specialized sealing applications.
Selection Guide
How to Choose PTFE Gaskets
The correct PTFE gasket grade, dimensions and thickness should be selected based on chemical exposure, temperature, pressure, flange type and required compliance.
01
Grade Selection
Choose virgin PTFE for broadest chemical resistance and electrical properties. Choose filled PTFE for improved creep resistance, compressive strength and dimensional stability under load.
02
Dimensions & Thickness
Specify inner diameter, outer diameter and thickness based on flange or equipment dimensions. Thicker gaskets compensate for uneven surfaces.
03
Operating Conditions
Chemical exposure, temperature range, pressure and mechanical load determine the appropriate grade and thickness.
04
Compliance Requirements
Specify if FDA compliance, RoHS documentation, or other material certifications are required for your application.
Manufacturing
Controlled Production for Consistent Quality
Consistent material composition, dimensional accuracy and surface finish are important for reliable PTFE gasket performance.
PROCESS / 01
Material Preparation
Virgin PTFE resin or filled compounds are prepared according to the required grade and specification.
PROCESS / 02
Molding / Cutting
PTFE gaskets are produced by compression molding into the required shape or by cutting from PTFE sheet or tube to the specified dimensions.
PROCESS / 03
Inspection & Testing
Finished gaskets are checked for dimensional accuracy, thickness, density, tensile strength and surface quality.
PROCESS / 04
Packaging & Shipment
Gaskets are packaged individually or in sets with protective interleaving, ready for export.
Why Choose hongwo
A B2B Supplier for Industrial Fluoropolymer Gaskets
We focus on supplying industrial fluoropolymer gaskets to overseas distributors, equipment manufacturers, maintenance companies and industrial buyers.
Industrial Product Focus
Focused on fluoropolymer gaskets and
industrial sealing products for B2B
applications.
ISO 9001 & RoHS
Quality management and RoHS compliance
documentation available where applicable.
OEM & Custom Supply
Support for customized grades, dimensions,
and packaging.
Application-Based Support
Provide your application, chemical exposure
and operating conditions so we can help
identify a suitable PTFE gasket grade.
Request a Quote
Tell Us Your PTFE Gasket Requirements
The more technical information you provide, the more accurately we can recommend the appropriate PTFE gasket grade and prepare a quotation.
You can also send a drawing, required specifications or application details after our sales team contacts you.
FAQ
Frequently Asked Questions About PTFE Gaskets
What are PTFE gaskets?
PTFE gaskets are sealing components made from
polytetrafluoroethylene (PTFE) resin, either by
cutting from PTFE sheet or by compression molding.
They are used for flange and equipment sealing in
aggressive chemical and high-temperature environments.
What is the temperature range of PTFE gaskets?
PTFE gaskets can be used continuously from -180°C to
+260°C, with short-term tolerance up to +300°C depending
on load and application conditions.
What chemicals are PTFE gaskets resistant to?
PTFE is virtually inert to almost all chemicals,
including strong acids, bases, solvents and oxidizing
agents. It is only attacked by molten alkali metals,
elemental fluorine and some fluorine compounds at
elevated temperatures.
What is the difference between virgin and filled PTFE gaskets?
Virgin PTFE gaskets offer the best chemical resistance
and electrical properties. Filled PTFE gaskets
incorporate additives such as glass, carbon, graphite
or bronze to improve creep resistance, compressive
strength and thermal conductivity.
Can PTFE gaskets be made to custom dimensions?
Yes. PTFE gaskets can be manufactured to any inner
diameter, outer diameter and thickness according to
your flange or equipment dimensions.
Are PTFE gaskets suitable for food contact?
Yes. FDA-compliant virgin PTFE gaskets are available
for food and pharmaceutical contact applications.
Please specify your compliance requirements when
requesting a quotation.
Do PTFE gaskets require special surface preparation?
PTFE gaskets perform best on clean, smooth flange
surfaces. For rough or uneven surfaces, filled grades
or thicker gaskets may be recommended to improve
sealing.
Can PTFE gaskets be used in vacuum service?
Yes. PTFE gaskets are suitable for vacuum applications
due to their low outgassing and excellent sealing
properties.
Is PTFE gasket RoHS compliant?
RoHS compliance can be provided for applicable grades
and documentation requirements. Please confirm the
required RoHS documentation and grade when requesting
a quotation.
What information do you need for a quotation?
Please provide the required grade (virgin or filled),
inner diameter, outer diameter, thickness, quantity,
chemical exposure, temperature and pressure, and any
compliance requirements.
Industrial PTFE Gasket
Get a PTFE Gasket Quote for Your Application
Tell us your grade, dimensions, operating conditions and compliance requirements. Our team will review your requirements and provide a suitable product recommendation and quotation.
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