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ptfe gasket
PTFE gaskets are essential components in industries requiring superior chemical resistance and thermal stability. Our gaskets are widely used in chemical processing, automotive, aerospace, and medical sectors. Key applications include:
Chemical Equipment: Linings for reactors, heat exchangers, and distillation towers.
Industrial Machinery: Seals for high-pressure vessels, pumps, and valves.
Semiconductor & Lab: Contamination-free sealing for sensitive environments.
Electrical: Dielectric insulators for circuit boards and electronic components.
We offer custom PTFE gaskets tailored to your specifications, from prototypes to bulk orders.
Our PTFE gaskets leverage the unique characteristics of polytetrafluoroethylene:
Temperature Resistance: Withstand continuous service from -200°C to +260°C (-328°F to +500°F), making them ideal for cryogenic and high-heat applications.
Chemical Inertness: Resistant to virtually all industrial chemicals, including strong acids (e.g., sulfuric, hydrochloric), bases, and solvents.
Low Friction: Coefficient of friction as low as 0.04, reducing wear in dynamic applications.
Non-Stick Surface: Prevents material buildup and eases cleaning in food/pharma applications.
Compression Molding: For high-density, void-free seals
CNC Machining: Precision-cut from PTFE rods/tubes for complex geometries
Skived Film Technology: Ultra-thin gaskets down to 0.05mm thickness
Expanded PTFE (ePTFE): Enhanced flexibility for irregular surfaces
Industry-Specific Solutions
Semiconductor Manufacturing
Ultra-clean gaskets with <1 ppb contaminant levels
FDA/USP Class VI compliant options
Particle-free designs for wafer processing
Chemical Processing
Lined flanges for corrosive media transfer
Custom shapes for glass-lined reactors
High-pressure designs (up to 3000 psi)
Pharmaceutical Applications
USP Class VI certified materials
Smooth surface finishes (Ra <0.8 μm)
Validatable cleaning protocols
Customization Services
We specialize in:
Material Blending: PTFE compounded with glass, graphite, or bronze for enhanced properties
Size Range: From micro-gaskets (<1mm ID) to large-diameter seals (>3m)
Profile Options: Full-face, spiral-wound, or kammprofile designs
Surface Treatments: Plasma etching for improved adhesion
Quality Assurance
All gaskets undergo:
Dimensional inspection (CMM verified)
Helium leak testing (to 1×10⁻⁹ mbar·L/s)
FTIR material verification
ASTM D3308 compliance testing
Installation Guidance
For optimal performance:
Clean flange surfaces to Ra 3.2-6.3 μm
Use alignment pins for large diameters
Apply PTFE-based lubricant if specified
Follow torque sequences (ASME PCC-1)
Conduct post-installation leak checks
Ready to Upgrade Your Sealing Solutions?
Our engineering team can develop PTFE gasket solutions for your most challenging applications. Contact us today for:
Technical Consultations: Our materials experts will analyze your requirements
Prototype Development: Fast-turnaround samples for testing
Volume Production: Reliable supply chain for high-quantity orders
All custom projects include complimentary DFM analysis and material selection guidance.
FAQ
What Are The Main Applications Of PTFE Gaskets?
PTFE gaskets are widely used in conveying pipes, exhaust pipes, steam pipes, high-pressure oil pipes in steel rolling mills, aircraft hydraulic systems, cold-pressing systems, distillation towers, heat exchangers, kettles, tank linings, valves, and other chemical equipment. They are also used in machinery, heat exchangers, high-pressure vessels, large-diameter vessels, pumps, and seals for grooved flanges, glass reactors, flat flanges, and large-diameter flange seals. Additionally, they are used in industries requiring chemical or heat resistance, including chemical processing, automotive, industrial, electrical, and medical sectors.
What Are The Key Features Of PTFE Gaskets?
PTFE gaskets come in various types including virgin, expanded, and modified options. They can handle nearly all chemicals and temperatures up to 500 degrees Fahrenheit. They are available for any need from small batch to high-volume production while meeting demanding standards. PTFE has a high melting point of around 347 °C, high resistance to water, a very low coefficient of friction, and flexibility even at low temperatures.
What Is The Principle Behind PTFE Gaskets?
PTFE gasket materials are known for their non-reactive characteristics, making them impervious to attack and degradation by aggressive gases, vapors, and fluids. They exhibit excellent dielectric properties, a very low coefficient of friction, and can operate across a wide temperature range from -400°F to 500°F. PTFE is among the most chemically resistant materials available.
What Are The Advantages Of Using PTFE Gaskets?
PTFE gaskets are non-corrosive, available in various shapes and sizes, work well with both high and low temperatures, have excellent chemical resistance, prevent leakage and cross-linking, and are economical in price. They offer chemical resistance to most acids, bases, and solvents; temperature resistance from -200°C to +260°C; excellent non-stick properties; high purity free from contaminants; and superior sealing performance against gas and liquid leakage.
How Are PTFE Gaskets Installed?
The installation process includes preparing the flange surfaces, inspecting the gasket, positioning it correctly, using alignment tools if necessary, applying lubrication if required, assembling the flanges, tightening the bolts in a crisscross pattern, and conducting a final check for leaks or misalignment.
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