🔷 Overview of industrial sealing gaskets

In piping and valve systems, gaskets play a critical role in sealing flange connections and preventing fluid leakage.

The two most commonly used types are:

• Spiral Wound Gasket (metallic gasket)
• PTFE Gasket (Teflon gasket)

👉 Each type is suitable for different pressure, temperature, and chemical conditions.

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⚙️ What is a spiral wound gasket?

A spiral wound gasket is made from:

• Metallic strips (such as stainless steel 304, 316)
• Soft filler materials (graphite or PTFE)

📌 Key features:

• Excellent high-pressure and high-temperature resistance
• Good elasticity, compensates flange irregularities
• Suitable for RF and RTJ flanges
• High sealing performance in harsh environments

👉 Commonly used in high-pressure and high-temperature systems

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⚙️ What is a PTFE gasket?

A PTFE gasket is made from Polytetrafluoroethylene (PTFE), also known as Teflon.

📌 Key features:

• Excellent chemical resistance
• Highly corrosion resistant
• Low friction coefficient
• Limited pressure and temperature resistance compared to SWG

👉 Commonly used in chemical and corrosive environments

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📊 Comparison: Spiral Wound Gasket vs PTFE Gasket

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🏭 When should you use a spiral wound gasket?

Choose a spiral wound gasket when:

✔️ High-pressure systems

• Oil & gas
• Steam systems

✔️ High-temperature conditions

• Power plants
• Boilers

✔️ Critical sealing applications

• RF and RTJ flanges

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🏭 When should you use a PTFE gasket?

Choose a PTFE gasket when:

✔️ Highly corrosive environments

• Acids and alkalis
• Chemical processing systems

✔️ Low to medium pressure systems

✔️ Strong chemical resistance is required

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⚠️ Common mistakes

• Using PTFE in high-pressure systems → deformation and leakage
• Using spiral wound gaskets without considering chemical compatibility → reduced lifespan
• Ignoring real operating temperature conditions

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🔥 Quick selection tips

👉 High pressure & high temperature → choose Spiral Wound Gasket
👉 Strong chemical resistance → choose PTFE Gasket

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🏁 Conclusion

Spiral Wound Gaskets and PTFE Gaskets serve different purposes:

• SWG = high pressure & high temperature performance
• PTFE = excellent chemical resistance

👉 Choosing the correct gasket helps:

• Improve sealing performance
• Reduce leakage risk
• Extend equipment lifespan

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📞 Contact Information

Phuc Minh Engineering Co., Ltd (PM-E) specializes in supplying industrial gaskets, valves, and piping equipment meeting international standards.

• 🌐 Website: pm-e.vn
• 📧 Email: info@pm-e.vn
• 📱 Hotline: +84 907 450 506 – +84 902 720 814 – +84 902 800 728