Frustrated by leaks in narrow grooves or compact sealing zones? PTFE gasket tape and ring gaskets offer quick and reliable sealing solutions even in the most constrained areas.

PTFE gasket tape is perfect for irregular surfaces, while PTFE ring gaskets provide precision sealing for flanged systems. Here’s how and where to use each type.

In this article, I’ll break down the specific applications, benefits, installation techniques, and material options for both PTFE gasket tape and PTFE ring gaskets — helping you seal smarter, not harder.

What is PTFE gasket tape used for?

PTFE gasket tape is a soft, form-in-place sealing strip ideal for narrow, misaligned, or glass-lined flanges.

It conforms to the sealing surface, fills micro-gaps, and doesn’t require pre-cut gaskets, which makes it highly convenient for field repairs or on-the-spot customization.

Where is PTFE gasket tape most effective?

• Heat exchangers and manways
• Enamelled or glass-lined flanges
• Vacuum systems and pump lids
• Emergency maintenance kits
• Narrow sealing faces where sheet gaskets won't fit

It’s one of the easiest ways to seal irregular equipment quickly. We offer multiple grades on our PTFE gasket product page for diverse sealing needs.

What is a PTFE ring gasket?

A PTFE ring gasket is a pre-cut gasket in standard or custom flange dimensions, typically used in ANSI/DIN systems to provide precise, uniform sealing.

Unlike tape, ring gaskets are more rigid and often used where consistent bolt loading and reliable centering are critical.

Best applications for PTFE ring gaskets

• Chemical pipelines
• Flanged joints (ANSI, DIN, JIS standards)
• Food and pharmaceutical fluid systems
• High-temperature, non-metallic piping
• Situations requiring torque-specific seals

Tjek vores PTFE envelope vs expanded gasket comparison if you're working with mixed media or uneven surfaces.

When should I choose tape over ring gaskets?

In my field experience, I’ve used tape for on-site glass flange repairs and ring gaskets for permanent stainless flange installations. Both have their place — it depends on the job.

How to install PTFE gasket tape correctly?

PTFE tape is easy to misuse if you don't follow proper technique. Here's how I recommend doing it:

1. Clean the sealing surface
2. Measure and cut the length slightly longer than the flange circumference
3. Overlap the ends (usually 5–10mm overlap is enough)
4. Center the tape along the bolt circle
5. Tighten gradually using a star pattern for uniform compression

Using FDA-grade PTFE tape? Learn more about suitable systems in our PTFE gasket complete guide.

Can PTFE gasket tape replace standard gaskets?

Yes — in many low to medium pressure applications (up to 30 bar), PTFE gasket tape works as a direct replacement, especially for irregular or large-diameter flanges.

However, it should not be used in:

• High bolt-load or torque-sensitive joints
• Large pipelines under dynamic pressure
• Applications requiring exact thickness tolerances

In those cases, a precision-machined PTFE ring gasket offers far better performance.

Konklusion

Use PTFE gasket tape for fast, flexible sealing on tricky surfaces. Use PTFE ring gaskets when precision and torque uniformity are essential.

Need help sealing hard-to-fit flanges?

Let us guide your selection with custom-cut options and flexible MOQ.
📧 E-mail: [email protected]
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We manufacture both PTFE tapes and ring gaskets — tailored to your industry needs.

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PTFE Gasket Product Details
PTFE Gasket Complete Guide
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