Expanded PTFE Gasket Tape and Joint Sealant Tape PTFE Sealing Tape

author: Qishine Industry

2023-05-16

Expanded PTFE gasket tape and joint sealant tape are flexible sealing cords made from expanded polytetrafluoroethylene (PTFE). They wrap around pipe threads, flange faces, and irregular joints to stop leaks of liquid and gas. This article explains how to choose the right tape, how it works with flange gaskets, and the benefits it brings.

One-Minute Overview

Expanded PTFE tape is a flexible, non-stick sealing cord made from expanded PTFE.
It conforms to uneven surfaces and fills gaps that cut gaskets cannot.
It works with flange gaskets to add a second layer of sealing.
Choose by the temperature, pressure, and the chemicals in the line.

How to Choose the Right Expanded PTFE Gasket Tape & Joint Sealant Tape for Your Application

When choosing expanded PTFE gasket tape and joint sealant tape, start with the job. The tape must match the material, the temperature and pressure range, and the chemicals it will meet.

Material Selection

Expanded PTFE tape is a form of PTFE, so it stays chemically inert across a wide range of media. It is supplied as a continuous cord or as a tape strip, and you cut the length you need.

Service Conditions: Temperature, Pressure and Chemical Compatibility

The tape resists a broad temperature span and most process chemicals, and it holds its shape under compression. Match the grade to the line's temperature, pressure, and the specific chemicals present so the seal stays reliable.

Understanding the Different Types of Flange Gaskets and How They Work with Expanded PTFE Gasket Tape & Joint Sealant Tape

Flange gaskets seal between two flanges in any piping system. Flat gaskets use a sheet of rubber, metal, or plastic; spiral-wound gaskets use a metal strip with a soft filler. Expanded PTFE tape and joint sealant tape are often added with these flanges to seal irregular faces and small gaps.

Where Expanded PTFE Tape Fits with Flange Gaskets

Use the tape on the flange face or on threads before the gasket is set, so it fills scratches and out-of-flat areas. It is a supplement to the gasket, not a full replacement, and it helps prevent leaks at the joint.

The Benefits of Using Expanded PTFE Gasket Tape & Joint Sealant Tape for Insulating and Isolating Flanges

Expanded PTFE tape and joint sealant tape give a secure seal between two surfaces and resist temperature extremes, chemical corrosion, and abrasion.

Sealing, Isolation and Easy Installation

The tape is flexible and non-porous, so it presses into place without special tools. It resists compression set, keeps its shape over time, and needs little maintenance, which makes it a cost-effective seal for many flange and joint duties.

FAQ

What is expanded PTFE gasket tape and joint sealant tape?

It is a high-performance sealing tape made from expanded polytetrafluoroethylene (PTFE). It gives a reliable seal in pipe and flange joints, valves, pumps, and other mechanical parts, and it resists a wide range of chemicals, temperatures, and pressures.

What are the benefits of expanded PTFE gasket tape and joint sealant tape?

It seals well, resists chemicals, has low friction, and works across a wide temperature range. The tape is also easy to install and suits many applications.

How do I install expanded PTFE gasket tape and joint sealant tape?

Clean the joint surface, cut the tape to length, wrap it around the joint or component, then press it firmly so it seals. Installation is quick and needs no special tool.

What temperature and chemical resistance does expanded PTFE tape offer?

Expanded PTFE tape resists a wide temperature range and most process chemicals, and it also stands up to abrasion and compression set, so it keeps its shape and seal over time.

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