---
title: "PTFE PTFE Thread Seal Tape"
description: "PTFE PTFE Thread Seal Tape (polytetrafluoroethylene (thermoplastic, not an elastomer)): near-universal chemical resistance; no elastic recovery, so it is"
url: https://engineeringhardware.com/guide/material/ptfe-ptfe-thread-seal-tape/
source: Engineering Hardware & Fasteners
---

# PTFE PTFE Thread Seal Tape

Seals · Trade series (PTFE thread sealing tape, colour-coded by density)

Temperature range, chemical and fluid compatibility, hardness and the full dimensional range for this compound.

PTFE PTFE Thread Seal Tape are supplied to polytetrafluoroethylene (thermoplastic, not an elastomer). Corrosion behaviour is near-universal chemical resistance; no elastic recovery, so it is used as a back-up or energised seal, the material is non-magnetic, and the usable service range is approx. -200 °C to +260 °C. In practice this grade is chosen for chemical service and low friction rather than for elastic sealing.

- **Grade:** polytetrafluoroethylene (thermoplastic, not an elastomer)
- **Corrosion resistance:** Near-universal chemical resistance; no elastic recovery, so it is used as a back-up or energised seal
- **Magnetic response:** Non-magnetic
- **Service temperature:** approx. -200 °C to +260 °C

Property values are typical for the grade. Certified mechanical test data is available on request for production orders.

![PTFE PTFE Thread Seal Tape reference image](https://engineeringhardware.com/wp-content/uploads/2026/09/PTFE-Thread-Seal-Tape.webp)

PTFE PTFE Thread Seal Tape are supplied to our own published dimensions — this is a trade-series article rather than one covered by a dimensional standard, so confirm the figures against the part you are replacing. The grade provides near-universal chemical resistance; no elastic recovery, so it is used as a back-up or energised seal and is non-magnetic; the practical service range is approx. -200 °C to +260 °C.

## Why Choose PTFE for PTFE Thread Seal Tape

Chosen for chemical service and low friction rather than for elastic sealing. For ptfe thread seal tape, this matters when near-universal chemical resistance; no elastic recovery, so it is used as a back-up or energised seal is the primary requirement.

## Mechanical & Physical Properties

| Grade designation | polytetrafluoroethylene (thermoplastic, not an elastomer) |
| --- | --- |
| Magnetic response | Non-magnetic |
| Service temperature | approx. -200 °C to +260 °C |
| Corrosion characteristic | Near-universal chemical resistance; no elastic recovery, so it is used as a back-up or energised seal |

## Galvanic & Galling Considerations

Galvanic and galling behavior do not apply to ptfe thread seal tape in PTFE — the relevant compatibility questions are chemical: confirm the elastomer against the fluid, the temperature and any cleaning agents in service, and check the gland or groove dimensions give the intended compression on the section.

## Comparable Grades

For ptfe thread seal tape, consider an energised or spring-loaded PTFE seal where recovery is required, or FKM where the chemistry allows an elastomer. Elastomer selection is decided by the medium, the temperature range and whether the seal is static or dynamic — not by strength.

## Sizes of PTFE Thread Seal Tape Available in PTFE

| Colour | Density | Intended service | Notes |
| --- | --- | --- | --- |
| white | standard density | water and general plumbing | general purpose |
| pink | high density | water, larger threads | thicker, fewer wraps needed |
| yellow | high density | gas lines | gas-rated tape |
| green | oil-free, degreased | oxygen service | must be oxygen-clean |
| grey | with filler | stainless steel threads | reduces galling on stainless |

Dimensions are independent of the material: every size above is available in PTFE.

Custom manufacturing · Made to drawing

## Need this seal in a grade that is not listed?

Ptfe is one of the grades the catalog describes. Inside diameter, cross-section and compound are the three that matter, and the compound is chosen against the fluid and the temperature rather than the dimensions.

Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

[Custom seal manufacturing](https://engineeringhardware.com/custom/seals/)[Send a drawing](https://engineeringhardware.com/custom/seals/#rfq)

## Technical Drawing

Dimensioned line drawing of white PTFE Thread Seal Tape to Trade series (PTFE thread sealing tape, colour-coded by density). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Density:** standard density
- **Intended service:** water and general plumbing
- **Notes:** general purpose

## Dimensions & Specifications (Trade series (PTFE thread sealing tape, colour-coded by density))

| Colour | Density | Intended service | Notes |
| --- | --- | --- | --- |
| white | standard density | water and general plumbing | general purpose |
| pink | high density | water, larger threads | thicker, fewer wraps needed |
| yellow | high density | gas lines | gas-rated tape |
| green | oil-free, degreased | oxygen service | must be oxygen-clean |
| grey | with filler | stainless steel threads | reduces galling on stainless |

Product catalog

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## Applications & Industries

What PTFE Thread Seal Tape are specified for, industry by industry. Stocked from white to grey (inside diameter).

### Industries that specify PTFE Thread Seal Tape

- **Gas installation:** Gas-rated tape only.
- **Process plant:** Stainless thread assembly.
- **Plumbing:** Tapered pipe threads.
- **Compressed air:** Fitting and manifold joints.
- **Hydraulics & pneumatics:** Static and dynamic sealing in cylinders and valve bodies.
- **Process & food equipment:** Sealing at joints that are cleaned and inspected.

### Typical applications

- using the grey filled tape on stainless to reduce galling
- keeping tape off the first thread so nothing enters the line
- wrapping in the direction the fitting will turn
- choosing the colour that matches the service
- sealing a joint against fluid or air pressure
- excluding dust and moisture from a housing

### Service conditions to specify against

- **Sealed joints:** Used where the fixing has to keep water or air out as well as hold — the elastomer, not the fastener, decides service life.

### Where to use something else

- Do not use general-purpose white tape on an oxygen line; oxygen service needs tape that is certified oil-free, and this is a safety requirement rather than a preference.

[Full application guide: where PTFE Thread Seal Tape are used, how to specify them, and the cases they are wrong for](https://engineeringhardware.com/applications/ptfe-thread-seal-tape/)

Inside the plant

## Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

1. ![Wire rod feeding into a cold heading machine](https://engineeringhardware.com/wp-content/uploads/2026/08/09-wire-rod-feed-cold-heading-machine.webp) 01 **Cold heading** Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail. Head dimensions and under-head radius checked at set-up and per shift.
2. ![Thread rolling machine producing bolt threads](https://engineeringhardware.com/wp-content/uploads/2026/08/03-thread-rolling-machine-bolt-production.webp) 02 **Thread rolling** Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch. Go / no-go ring gauges to ISO 965 tolerance class 6g.
3. ![Baskets of bolts staged for heat treatment](https://engineeringhardware.com/wp-content/uploads/2026/08/05-heat-treatment-baskets-black-bolts.webp) 03 **Heat treatment** Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it. Core hardness and tensile tested per lot to ISO 898-1.
4. ![Zinc plated bolts in a treatment basket](https://engineeringhardware.com/wp-content/uploads/2026/08/23-zinc-plated-bolts-treatment-basket.webp) 04 **Surface treatment** Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list. Coating thickness and neutral salt spray hours to ISO 9227.

## Frequently Asked Questions

### Are PTFE PTFE Thread Seal Tape magnetic?

PTFE PTFE Thread Seal Tape are non-magnetic.

### What corrosion resistance do PTFE PTFE Thread Seal Tape offer?

PTFE PTFE Thread Seal Tape provide near-universal chemical resistance; no elastic recovery, so it is used as a back-up or energised seal with a service range of approx. -200 °C to +260 °C.

### Which media is PTFE suitable for?

PTFE suits almost every chemical, over a very wide temperature range. It is the wrong choice for anything needing elastic recovery — it cold-flows and takes a set. Elastomer selection is decided by the fluid first, then the temperature, then whether the seal is static or dynamic.

### What hardness are PTFE PTFE Thread Seal Tape supplied in?

Shore A 70 is the general-purpose default. A softer compound (around 60) seals better on a rough or slightly out-of-round surface; a harder one (around 80 to 90) resists extrusion at higher pressure or across a wider gap. State the hardness on the order — it is not implied by the material.

### How do I request a quotation?

Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.

## Related Pages

[View the full PTFE Thread Seal Tape page](https://engineeringhardware.com/fastener/ptfe-thread-seal-tape/)

### More PTFE Thread Seal Tape Guides