---
title: "EPDM PTFE Thread Seal Tape"
description: "EPDM PTFE Thread Seal Tape (ethylene-propylene-diene rubber, typically 70 Shore A): excellent in water, steam, brake fluid and weathering; unsuitable for"
url: https://engineeringhardware.com/guide/material/epdm-ptfe-thread-seal-tape/
source: Engineering Hardware & Fasteners
---

# EPDM 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.

EPDM PTFE Thread Seal Tape are supplied to ethylene-propylene-diene rubber, typically 70 Shore A. Corrosion behaviour is excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil, the material is non-magnetic, and the usable service range is approx. -45 °C to +150 °C. In practice this grade is the water, steam and outdoor-weathering elastomer.

- **Grade:** ethylene-propylene-diene rubber, typically 70 Shore A
- **Corrosion resistance:** Excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil
- **Magnetic response:** Non-magnetic
- **Service temperature:** approx. -45 °C to +150 °C

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

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

EPDM 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 excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil and is non-magnetic; the practical service range is approx. -45 °C to +150 °C.

## Why Choose EPDM for PTFE Thread Seal Tape

The water, steam and outdoor-weathering elastomer. For ptfe thread seal tape, this matters when excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil is the primary requirement.

## Mechanical & Physical Properties

| Grade designation | ethylene-propylene-diene rubber, typically 70 Shore A |
| --- | --- |
| Magnetic response | Non-magnetic |
| Service temperature | approx. -45 °C to +150 °C |
| Corrosion characteristic | Excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil |

## Galvanic & Galling Considerations

Galvanic and galling behavior do not apply to ptfe thread seal tape in EPDM — 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 NBR for mineral oil and hydraulic service, which EPDM does not tolerate, or silicone for a wider temperature range in static duty. 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 EPDM

| 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 EPDM.

Custom manufacturing · Made to drawing

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

Epdm 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

## Related Thread Sealants & Threadlockers products

[![American Standard M3.5*50mm Drywall Wood Screw Steel Black Flat Head Self Tapping Drywall Screw to Wood](https://img.engineeringhardware.com/American-Standard-M3-5-50mm-Drywall-Wood-Screw-Steel-Black-Flat-Head-Self-Tapping-Drywall-Screw-to-Wood.webp)](https://engineeringhardware.com/product/american-standard-m3-5-50mm-drywall-wood-screw-steel-black-flat-head-self-tapping/)

Self-Tapping & Thread-Forming Screws

### [American Standard M3.5*50mm Drywall Wood Screw Steel Black Flat Head Self Tapping Drywall Screw to Wood](https://engineeringhardware.com/product/american-standard-m3-5-50mm-drywall-wood-screw-steel-black-flat-head-self-tapping/)

Round Head · GB, SGS

**US$1,140 – 1,800**MOQ 1 ton

[![Durable Ceiling Drywall Screws for Easy Installation and Strength](https://img.engineeringhardware.com/Durable-Ceiling-Drywall-Screws-for-Easy-Installation-and-Strength.webp)](https://engineeringhardware.com/product/durable-ceiling-drywall-screws-for-easy-installation-and-strength/)

Self-Tapping & Thread-Forming Screws

### [Durable Ceiling Drywall Screws for Easy Installation and Strength](https://engineeringhardware.com/product/durable-ceiling-drywall-screws-for-easy-installation-and-strength/)

Self-Tapping Screw, Drywall Screw, Plasterboard Sc · ["DIN7982","ISO.A…

**US$1,068 – 1,176**MOQ 500 kilograms

[![Premium Black Chipboard Screws DIN18182 3.5X25mm Self Tapping](https://img.engineeringhardware.com/Premium-Black-Chipboard-Screws-DIN18182-3-5X25mm-Self-Tapping.webp)](https://engineeringhardware.com/product/premium-black-chipboard-screws-din18182-3-5x25mm-self-tapping/)

Self-Tapping & Thread-Forming Screws

### [Premium Black Chipboard Screws DIN18182 3.5X25mm Self Tapping](https://engineeringhardware.com/product/premium-black-chipboard-screws-din18182-3-5x25mm-self-tapping/)

Flat Head · ISO9001/CE

**US$0.024**MOQ 5,000 pieces

[![China Factory Direct Sales of Wood Screws, Furniture Countersunk Head Tapping Screws, Hexagon Socket Screws](https://img.engineeringhardware.com/China-Factory-Direct-Sales-of-Wood-Screws-Furniture-Countersunk-Head-Tapping-Screws-Hexagon-Socket-Screws.webp)](https://engineeringhardware.com/product/china-factory-direct-sales-of-wood-screws-furniture-countersunk-head-tapping-screws/)

Self-Tapping & Thread-Forming Screws

### [China Factory Direct Sales of Wood Screws, Furniture Countersunk Head Tapping Screws, Hexagon Socket Screws](https://engineeringhardware.com/product/china-factory-direct-sales-of-wood-screws-furniture-countersunk-head-tapping-screws/)

Hexagon Head · DIN

**US$0.12 – 1.20**MOQ 1 piece

[![Hex Washer Head Self Tapping Polycarbonate Roofing Screw with EPDM Seal](https://img.engineeringhardware.com/Hex-Washer-Head-Self-Tapping-Polycarbonate-Roofing-Screw-with-EPDM-Seal.webp)](https://engineeringhardware.com/product/hex-washer-head-self-tapping-polycarbonate-roofing-screw-with-epdm-seal/)

Self-Tapping & Thread-Forming Screws

### [Hex Washer Head Self Tapping Polycarbonate Roofing Screw with EPDM Seal](https://engineeringhardware.com/product/hex-washer-head-self-tapping-polycarbonate-roofing-screw-with-epdm-seal/)

Carbon Steel · ISO 1478 St, Pitch 1.6-1.8 mm

**US$0.0216 – 0.078**MOQ 5,000 pieces

[![High Quality A2 /A4 DIN7982 Crosse Recessed Flat Head Self- Tapping Screw for Furniture](https://img.engineeringhardware.com/High-Quality-A2-A4-DIN7982-Crosse-Recessed-Flat-Head-Self-Tapping-Screw-for-Furniture.webp)](https://engineeringhardware.com/product/high-quality-a2-a4-din7982-crosse-recessed-flat-head-self-tapping-screw-for-furniture/)

Self-Tapping & Thread-Forming Screws

### [High Quality A2 /A4 DIN7982 Crosse Recessed Flat Head Self- Tapping Screw for Furniture](https://engineeringhardware.com/product/high-quality-a2-a4-din7982-crosse-recessed-flat-head-self-tapping-screw-for-furniture/)

Countersunk Head · DIN

**US$0.0012 – 0.006**MOQ 10,000 pieces

[View all Self-Tapping & Thread-Forming Screws →](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) [Full product catalog](https://engineeringhardware.com/products/)

## 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

### How much compression should EPDM ptfe thread seal tape see?

The groove or gland decides it, not the seal: a static radial seal is normally designed for roughly 15–30% compression on the section, and a dynamic one for less. Give us the groove dimensions and the pressure and we will confirm the section against them.

### What's the service temperature limit for EPDM?

The practical service range is approx. -45 °C to +150 °C.

### Are EPDM PTFE Thread Seal Tape magnetic?

EPDM PTFE Thread Seal Tape are non-magnetic.

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

EPDM PTFE Thread Seal Tape provide excellent in water, steam, brake fluid and weathering; unsuitable for mineral oil with a service range of approx. -45 °C to +150 °C.

### 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