PTFE Envelope Gaskets
PTFE Envelope Gaskets
PTFE envelope gaskets wrap a resilient insert in a chemically inert PTFE jacket, combining the compressibility of the core with the universal chemical resistance of PTFE. This makes them an economical, high-performance choice for sealing aggressive media on glass-lined and metal flanges.
Key Features
- PTFE jacket for near-universal chemical resistance
- Resilient core for excellent sealability
- Ideal for glass-lined and metal flanges
- FDA-compliant material options
- Custom sizes and profiles available
Typical Applications
FAQ
PTFE Envelope Gaskets — FAQs
What is a PTFE envelope gasket?+
A PTFE envelope gasket wraps a resilient core insert in a chemically inert PTFE jacket. This combines the sealability of the core with PTFE’s near-universal chemical resistance, making it ideal for glass-lined and metal flanges handling aggressive media.
When should I choose an envelope gasket over a full PTFE gasket?+
Choose an envelope gasket when you need better compressibility and sealing on uneven or glass-lined flanges while retaining PTFE chemical resistance. The resilient core improves sealability where a solid PTFE gasket might cold-flow or leak.
Are PTFE envelope gaskets food-grade?+
PTFE is FDA-compliant and available in food-grade options, so PTFE envelope gaskets can be specified for food, beverage and pharmaceutical sealing applications. Confirm the required grade with our team for your specific process.
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