Self-Adhesive Expanded PTFE Joint Sealant Tape (ePTFE Sealant)

Hebei Xinda provides high-quality expanded PTFE joint sealant tape, a 100% fluorocarbon material with a micro-porous structure. Unlike standard PTFE, our ePTFE joint sealant is highly compressible and features a convenient self-adhesive backing, making it the premier choice for sealing large, complex, or fragile tank and pipe flanges.

 ePTFE Tape Data Sheet 

 Product Specifications 

The specifications of this product are listed above. For other special or custom specifications, please contact us for consultation.

Application scenarios and chemical compatibility

1. Chemical Resistance: Inert to all media (PH 0-14) except molten alkali metals and elemental fluorine.
2. FDA Compliance: Suitable for food-contact surfaces and pharmaceutical cleanrooms.
3. Fragile Flanges: Ideal for plastic, glass, and ceramic flanges where low bolt torque is required.

 Applications: 

1. 1. Flange sealing in chemical, petrochemical, and power industries
2. 2. Pharmaceutical and food process equipment
3. 3. Glass-lined or enamel-coated vessels
4. 4. Pipeline connections, manholes, and heat exchangers
5. 5. Maintenance and repair of metal and plastic flanges

FAQ

Q1: How do I select the right size of expanded PTFE joint sealant tape?

A: As a general rule, choose a joint sealant tape width that is approximately 1/3 to 1/2 of the flange sealing surface width. For uneven or pitted surfaces, a thicker tape (e.g., 5mm or 7mm) is recommended to ensure full compression into voids.

Q2: Does the adhesive backing affect the chemical resistance?

A: The adhesive is only used to facilitate installation on vertical or overhead surfaces. Once the flange is bolted, the ePTFE joint sealant forms a tight mechanical seal, and the adhesive is isolated from the internal media.