Expanded PTFE Sealant Tape

Kaxite Sealing's Expanded Ptfe Sealant Tape is a premium sealing solution for pipes and joints, offering superior leak-proof protection with its durable PTFE material. Its key advantages include easy application, high-temperature resistance, and long-lasting performance, making it ideal for plumbers, DIY enthusiasts, and industrial users in plumbing, HVAC, or automotive repairs. Users enjoy peace of mind from enhanced safety and reduced maintenance, while its flexibility sets it apart from rigid alternatives. Experience reliable sealing with Kaxite Sealing—your trusted choice for quality assurance.

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Product Description

Expanded PTFE Sealant Tape — Form-in-Place Joint Sealing for Any Flange

Kaxite expanded PTFE (ePTFE) joint sealant tape is made from 100% virgin PTFE, converted through a controlled expansion process into a soft, multi-directionally fibrillated microporous structure. Supplied as a continuous tape with a self-adhesive backing strip, it seals rough, pitted, scratched and irregular flange faces that pre-cut gaskets cannot handle — at a fraction of the bolt torque required by sheet or metal gaskets.

Manufactured in Ningbo, China by Kaxite Sealing, our ePTFE sealant tapes are supplied in widths from 3 mm to 100 mm and thicknesses from 1.5 mm to 7 mm, with density grades A (0.70 g/cm³) and B (0.80 g/cm³). OEM/ODM, bulk wholesale and free samples for qualified buyers.

Material 100% ePTFE Temperature -268 ~ +260°C Pressure Vacuum ~ 200 bar Media pH 0-14 Adhesive Self-adhesive strip Widths 3 - 100 mm Certifications FDA / RoHS / REACH Lead time 7-15 days

Why choose ePTFE tape over pre-cut gaskets

Expanded PTFE Sealant Tape

Form-in-Place. Conforms to any surface — round, oval, rectangular, irregular, pitted or damaged
One roll replaces dozens of gaskets. No templates, no precutting, no scrap, minimal inventory
Low bolt load. Seals fragile flanges where high torque would crack glass, plastic or ceramic
Self-adhesive backing. Peels and presses onto the flange face — one-handed installation
Unlimited shelf life. No aging, no deterioration, UV resistant

Pre-Cut Sheet / Metal Gaskets

Must stock many sizes; oversized or undersized gaskets cannot be adjusted on-site
Templates, cutting tools and skilled fitting required
Requires high bolt torque — risks cracking glass-lined or plastic flanges
Cannot seal severely pitted, warped or damaged flange faces without additional sealant
Finite shelf life and risk of wrong-material selection

Installation — 5 simple steps

Clean the flange face

Remove dirt, corrosion, oil and old gasket residue. The surface must be dry and free of loose particles.

Peel the backing

Cut one end of the tape and remove a short section of the protective paper to expose the adhesive strip.

Press onto the flange

Apply the tape onto the flange face, starting next to a bolt hole. Work around the circumference, pressing firmly.

Overlap and skive the ends

Where the two ends meet, overlap to approximately 120% of the tape thickness. Skive the ends for a smooth, flush joint.

Torque in a star pattern

Apply progressive torque sequences with a torque wrench in a star (180°) pattern. This ensures even compression across the joint.

Typical applications

Glass-lined & enamel flanges

Seals without cracking fragile glass or enamel surfaces — low bolt-load requirement is essential.

Plastic, FRP & PVC flanges

Soft compression avoids distorting plastic flange faces that cannot take high bolt torque.

Chemical & petrochemical

Acid, halogen, solvent and oxidizer flanges across pH 0-14 in chemical processing and refining.

Heat exchangers

Seals irregular and thermally cycled joints without relaxing bolt load between service and shutdown.

Pharmaceutical & food

FDA-compliant, odourless, taste-neutral contact surface for sterile and food-grade piping.

Manholes & inspection covers

Large, irregular or out-of-parallel sealing surfaces that pre-cut gaskets cannot cover.

Technical specifications

Material: 100% Expanded PTFE (ePTFE)
Structure: Multi-directional fibrillated
Density Grade A / B: 0.70 / 0.80 g/cm³
Service temperature: -268 ~ +260°C
Short-term peak: +315°C
Pressure range: Vacuum ~ 200 bar
Compressibility: 40 - 60% (ASTM F36)
Recovery: ≥ 10 - 17% (ASTM F36)
Tensile strength: 30 MPa
Chemical resistance: pH 0 – 14
Adhesive: Single-side self-adhesive
Width range: 3 – 100 mm
Thickness range: 1.5 – 7 mm
Colour: White
Certifications: FDA / RoHS / REACH
Shelf life: Unlimited

How to order

1. Width and thickness: In mm (e.g. 10 × 3 mm)
2. Density grade: A (0.70) or B (0.80 g/cm³)
3. Roll length: In metres or feet
4. Adhesive type: Standard or 3M food-grade adhesive
5. Operating conditions: Temperature, pressure, media
6. Quantity and target date: Plus destination port
7. Documentation: Material cert / SGS / third-party
8. Sample request: Free for qualified buyers

FAQ

Q1What is expanded PTFE joint sealant tape?

Expanded PTFE joint sealant tape is a 100% virgin PTFE material converted through a controlled expansion process into a soft, multi-directionally fibrillated microporous structure. It is supplied as a continuous tape with a self-adhesive backing strip. This form-in-place gasket conforms to any flange shape — round, oval, rectangular or irregular — and seals at much lower bolt torque than sheet or metal gaskets, making it ideal for fragile flanges made of glass, plastic, FRP or ceramic.

Q2What is the temperature and pressure range?

Continuous service range is -268°C to +260°C, with short-term peaks up to +315°C. Pressure capability ranges from full vacuum up to 200 bar (2,900 psi), depending on tape width, thickness, density grade and bolting conditions. For extreme conditions, send us the operating parameters and we will recommend a suitable tape specification.

Q3Why choose ePTFE tape instead of a pre-cut gasket?

ePTFE joint sealant tape eliminates the need to stock dozens of pre-cut gasket sizes. One roll can replace many individual gaskets, reducing inventory cost and eliminating scrap. Installation requires no templates or special tools — simply cut to length, peel the backing, press onto the flange face and overlap the ends. It also seals irregular or damaged flange surfaces that pre-cut gaskets cannot handle.

Q4How do I install expanded PTFE sealant tape?

1. Clean the flange face — remove dirt, corrosion, oil and old gasket residue. 2. Cut one end of the tape and peel a short section of the protective paper. 3. Press the tape onto the flange face, starting next to a bolt hole. 4. Work around the circumference, ending with an overlap of roughly 120% of the tape thickness. Skive the ends for a smooth joint. 5. Apply progressive torque sequences in a star pattern using a torque wrench.

Q5Are expanded PTFE sealant tapes FDA compliant?

Yes. Our expanded PTFE sealant tapes conform to FDA 21 CFR 177.1550 for food-contact applications, and are RoHS and REACH compliant. The adhesive backing is also approved for food-contact use. TA-Luft compliance is available for fugitive emission control applications. Material certificates and third-party inspection reports can be supplied with production orders.

Q6What is the MOQ, lead time and sample policy?

MOQ is flexible and depends on tape width, thickness and density grade. Standard lead time is 7-15 days after order confirmation. Free samples are available for qualified buyers — send us the required width, thickness, density grade and adhesive type, and we will confirm sample lead time.

Request a quotation for expanded PTFE sealant tape

Send width, thickness, density grade and roll length — our engineers reply with pricing, lead time and sample availability within 24 hours.

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Contact Info

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Address

No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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Tel

0086-574-87527771
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Email

[email protected]

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