--- title: "PTFE Thread Seal Tape" description: "PTFE Thread Seal Tape to Trade series (PTFE thread sealing tape, colour-coded by density): full dimensional table. Technical drawing redraws to any row." url: https://engineeringhardware.com/fastener/ptfe-thread-seal-tape/ source: Engineering Hardware & Fasteners --- # PTFE Thread Seal Tape Seals · Thread Sealants & Threadlockers 5 catalogued sizes, dimensioned to Trade series (PTFE thread sealing tape, colour-coded by density). Pick any row and the technical drawing redraws to it. PTFE Thread Seal Tape to Trade series (PTFE thread sealing tape, colour-coded by density): the full dimensional table is reproduced below. 5 sizes are held in the table below, and the technical drawing redraws to whichever row you select. - **Standard:** Trade series (PTFE thread sealing tape, colour-coded by density) - **Catalogued sizes:** 5 Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering. ![PTFE Thread Seal Tape technical product image](https://engineeringhardware.com/wp-content/uploads/2026/09/PTFE-Thread-Seal-Tape.webp) Product catalog ## Related Thread Sealants & Threadlockers products [![Stainless Steel or Steel Pan Head Csk Head Truss Head Blunt Point Cutting Type Self Tapping Screws for Plastic](https://img.engineeringhardware.com/Stainless-Steel-or-Steel-Pan-Head-Csk-Head-Truss-Head-Blunt-Point-Cutting-Type-Self-Tapping-Screws-for-Plastic.webp)](https://engineeringhardware.com/product/stainless-steel-or-steel-pan-head-csk-head-truss-head-blunt-point-cutting-type-self/) Self-Tapping & Thread-Forming Screws ### [Stainless Steel or Steel Pan Head Csk Head Truss Head Blunt Point Cutting Type Self Tapping Screws for Plastic](https://engineeringhardware.com/product/stainless-steel-or-steel-pan-head-csk-head-truss-head-blunt-point-cutting-type-self/) Tapping Screws · DIN, ANSI, GB, JIS, BSW, GOST **US$0.024 – 0.12**MOQ 1,000 pieces [![Countersunk Head Hexagon Socket Self-Tapping Screw Furniture Screw Hexagon Socket Wood Screws](https://img.engineeringhardware.com/Countersunk-Head-Hexagon-Socket-Self-Tapping-Screw-Furniture-Screw-Hexagon-Socket-Wood-Screws.webp)](https://engineeringhardware.com/product/countersunk-head-hexagon-socket-self-tapping-screw-furniture-screw-hexagon-socket/) Self-Tapping & Thread-Forming Screws ### [Countersunk Head Hexagon Socket Self-Tapping Screw Furniture Screw Hexagon Socket Wood Screws](https://engineeringhardware.com/product/countersunk-head-hexagon-socket-self-tapping-screw-furniture-screw-hexagon-socket/) Goblet Head · DIN, GB, ANSI, JIS, DIN, ANSI, GB, JIS, GOST, Bsw **US$0.012**MOQ 50 pieces [![Durable Self-Tapping Drywall Screws with Thermal Black Phosphate Coating](https://img.engineeringhardware.com/Durable-Self-Tapping-Drywall-Screws-with-Thermal-Black-Phosphate-Coating.webp)](https://engineeringhardware.com/product/durable-self-tapping-drywall-screws-with-thermal-black-phosphate-coating/) Self-Tapping & Thread-Forming Screws ### [Durable Self-Tapping Drywall Screws with Thermal Black Phosphate Coating](https://engineeringhardware.com/product/durable-self-tapping-drywall-screws-with-thermal-black-phosphate-coating/) Common Nail · ANSI, DIN, GB, ISO, JIS **US$0.012 – 0.13**MOQ 1,000 pieces [![DIN7500-PE Carbon Steel Hexalobular Socket Pan Head Thread Rolling Torx Thread Forming Screw](https://img.engineeringhardware.com/DIN7500-PE-Carbon-Steel-Hexalobular-Socket-Pan-Head-Thread-Rolling-Torx-Thread-Forming-Screw.webp)](https://engineeringhardware.com/product/din7500-pe-carbon-steel-hexalobular-socket-pan-head-thread-rolling-torx-thread/) Self-Tapping & Thread-Forming Screws ### [DIN7500-PE Carbon Steel Hexalobular Socket Pan Head Thread Rolling Torx Thread Forming Screw](https://engineeringhardware.com/product/din7500-pe-carbon-steel-hexalobular-socket-pan-head-thread-rolling-torx-thread/) Pan Head · DIN, GB, ANSI, JIS **US$0.0216 – 0.16**MOQ 10,000 pieces [![Stainless Steel Pan Head Csk Head Truss Head Hex Flange Head Sharp Point Sheet Metal Self Tapping Screws](https://img.engineeringhardware.com/Stainless-Steel-Pan-Head-Csk-Head-Truss-Head-Hex-Flange-Head-Sharp-Point-Sheet-Metal-Self-Tapping-Screws.webp)](https://engineeringhardware.com/product/stainless-steel-pan-head-csk-head-truss-head-hex-flange-head-sharp-point-sheet-metal/) Self-Tapping & Thread-Forming Screws ### [Stainless Steel Pan Head Csk Head Truss Head Hex Flange Head Sharp Point Sheet Metal Self Tapping Screws](https://engineeringhardware.com/product/stainless-steel-pan-head-csk-head-truss-head-hex-flange-head-sharp-point-sheet-metal/) Tapping Screws · DIN, ANSI, GB, JIS, BSW, GOST **US$0.024 – 0.12**MOQ 1,000 pieces [![ISO En DIN7053 Hexagon Head Tapping Screws](https://img.engineeringhardware.com/ISO-En-DIN7053-Hexagon-Head-Tapping-Screws.webp)](https://engineeringhardware.com/product/iso-en-din7053-hexagon-head-tapping-screws/) Self-Tapping & Thread-Forming Screws ### [ISO En DIN7053 Hexagon Head Tapping Screws](https://engineeringhardware.com/product/iso-en-din7053-hexagon-head-tapping-screws/) Hexagon Head With Flange · DIN, ANSI, GB, JIS, BSW, GOST **US$0.012 – 0.12**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/) ## 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)) Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row. | 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 | PTFE Thread Seal Tape (Trade series (PTFE thread sealing tape, colour-coded by density)) are a type of seals used across industrial assembly. Below is the complete size table together with material, standard and application guidance. ## What Are PTFE Thread Seal Tape? PTFE Thread Seal Tape are seals defined by Trade series (PTFE thread sealing tape, colour-coded by density). They are selected by inside diameter and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment. ## Materials & Finishes O-rings and seals are specified by elastomer, not by steel grade: NBR (nitrile) for mineral oil and hydraulic service, FKM for higher temperature and aggressive chemistry, EPDM for water, steam and weathering, silicone for a wide temperature range in static duty, and PTFE where chemical resistance outweighs elastic recovery. Specify the compound, the hardness in Shore A and the temperature range alongside the dimensions. ## Specification Guides Each size, material and standard of PTFE Thread Seal Tape has its own reference page with the figures for that one configuration. ## Goes With Hardware commonly specified alongside PTFE Thread Seal Tape. ## Pricing PTFE Thread Seal Tape are supplied to order. Pricing starts from approximately US$0.35 per piece for standard sizes in standard nitrile (NBR) 70 Shore A; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above. Custom manufacturing · Made to drawing ## Need a PTFE thread seal tape outside the standard range? A special seal is almost always a compound change rather than a size change — the same dimensions in a material that survives the medium. 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) 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 ### What is the controlling standard for PTFE Thread Seal Tape? PTFE Thread Seal Tape are manufactured to Trade series (PTFE thread sealing tape, colour-coded by density). The dimensional values on this page follow that standard. ### What is the size range of PTFE Thread Seal Tape? The table on this page lists 5 sizes for PTFE Thread Seal Tape, ranging from white to grey. Sizes outside the table can be quoted on request. ### In which materials are PTFE Thread Seal Tape supplied? PTFE Thread Seal Tape are supplied in NBR (nitrile), FKM, EPDM, silicone and PTFE, selected by fluid and temperature, with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for PTFE Thread Seal Tape. ### How do I request a quotation? Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.