Polytetrafluoroethylene (PTFE) Heat Shrink Tubing

"Absolutely solved my problem with protecting a connection in an area of high temp (300 deg F)"

PTFE Heat Shrink Tubing

PTFE Heat Shrink Tubing

pass UL VW-1 Flame Test  CSA

Low Price GuaranteeWhat's special about this standard wall extruded PTFE Heat Shrink?

  • It's high continuous temperature range make it perfect for military applications in electrical sheath insulation
  • Super lubricious, it offers extreme chemical resistance and the lowest coefficient of friction of any polymer
  • Meets specifications MIL-I-23053/12 and flame rating for UL94 V0 and VW-1
  • GSA approvedDual Wall PTFE is also available, click here.
  • Click for More Features
Scroll To Pricing

 

  • Continuous operating temperature -454°F to 500°F (-270°C to 260°C)
  • Outstanding resistance to almost any chemical known (exceptions: alkali metals in molten state, fluorine gas at high temperatures, chlorine trifluoride)
  • Chemically inert
  • Biocompatible, TFE is certified FDA and USP Class VI for use in diagnostic, medical, and analytical applications consisting of heat shrink tubing
  • Very low coefficient of friction
  • Good dielectric strength
  • Flame rating UL94 V0 and VW-1 (file E#64007/ CSA file # 02582)
  • Limiting Oxygen Index greater than 95
  • ETO and autoclave sterilizable
  • ASTM D876 and ASTM D 1675 approved
  • Mil spec approved AMS-DTL-23053/12
  • MIL-STD-104 approved
  • MIL-STD-2073-1: DOD material procedure for development and application of packaging requirements
  • Tested by SAE for Aerospace Material Specifications
  • Available color is Natural

 

PTFE heat shrink tubing is available in 2:1 and 4:1 shrink ratios, and is widely used in military applications (AMS-DTL-23053/12), industrial, biomedical, chemical and analytical sciences because of its high continuous use temperature (250°C), and outstanding chemical resistance.

PTFE heat shrink tubing is the most difficult of the three fluoropolymer materials to shrink due to its extremely high shrinking temperature (325-340°C). You can use a heat gun or welding torch to shrink TFE, but these methods have a tendency to cause the material to overheat in small areas, while under-heating other areas, causing uneven shrinking and potential burning of the material. The most reliable method for shrinking PTFE is the use of a controlled temperature oven; however this is impractical with large harnesses or temperature sensitive components.

A few notes on shrinking PTFE:

  1. Always assure good ventilation in the immediate work area prior to beginning the heat shrink process. Fumes may cause nausea and dizziness.
  2. It is imperative that the tubing be heated uniformly until it becomes clear (gel state). This transition from crystalline to amorphous must take place, since shrinkage will only occur during recovery from the gel state (re-crystallizing).
  3. When using a mandrel to shrink the tubing, it is important to pre-heat the mandrel to assure even and uniform shrinkage.
  4. If the tubing begins to crack, chances are you overheated the material.
  5. Also, higher shrink ratios will require higher shrink temperatures.

 

2:1 Ratio

STANDARD WALL
Ordered as  AWG Size No. Expanded I.D. Min. Recovered I.D. Max. Recovered Wall Thickness
Nom. Tol. +/-
1/8 0.215" 0.130" 0.020" 0.004"
1/4 0.410" 0.260" 0.020" 0.004"
5/16 0.470" 0.329" 0.020" 0.004"
3/8 0.560" 0.399" 0.025" 0.006"
7/16 0.655" 0.462" 0.025" 0.006"
1/2 0.750" 0.524" 0.025" 0.006"
5/8 0.930" 0.655" 0.025" 0.006"
3/4 1.125" 0.786" 0.030" 0.008"
7/8 1.310" 0.911" 0.030" 0.008"
1 1.500" 1.036" 0.030" 0.008"

* CUSTOM SPECIFICATIONS AND TOLERANCES UPON REQUEST
* AMS-DTL-23053/12
TW=AMS 3585
SW=AMS 3586

4:1 Ratio

ORDERED AS I.D.
(inches)
EXPANDED I.D. MIN.
(inches)
RECOVERED-AFTER HEAT SHRINK
I.D. MAX.
(inches)
WALL THICKNESS
(inches)
NOM. Tol.+/-
5/64 0.078 0.025 0.009 +/- 0.002
1/8 0.125 0.037 0.012 +/- 0.002
3/16 0.187 0.050 0.012 +/- 0.002
1/4 0.250 0.063 0.012 +/- 0.002
5/16 0.312 0.078 0.012 +/- 0.002
3/8 0.375 0.096 0.012 +/- 0.002
7/16 0.438 0.112 0.012 +/- 0.002
1/2 0.500 0.144 0.015 +/- 0.004
9/16 0.562 0.155 0.015 +/- 0.004
5/8 0.625 0.178 0.015 +/- 0.004
11/16 0.687 0.198 0.015 +/- 0.004
3/4 0.750 0.224 0.015 +/- 0.004
7/8 0.875 0.244 0.015 +/- 0.004
1 1.000 0.278 0.015 +/- 0.004
1-1/4 1.250 0.347 0.015 +/- 0.004
1-1/2 1.500 0.400 0.015 +/- 0.004
1-3/4 1.750 0.450 0.015 +/- 0.004
2 2.000 0.520 0.020 +/- 0.005
2-1/4 2.250 0.585 0.020 +/- 0.005
2-1/2 2.500 0.650 0.020 +/- 0.005
2-3/4 2.750 0.710 0.020 +/- 0.005
3 3.000 0.775 0.020 +/- 0.005
3-1/4 3.250 0.835 0.020 +/- 0.005
3-1/2 3.500 0.900 0.025 +/- 0.005
3-3/4 3.750 0.960 0.025 +/- 0.005
4 4.000 1.025 0.025 +/- 0.005

 

Four foot sticks of heat shrink tubing are standard packaging lengths. Shorter pieces, longer pieces, or cut pieces to size are available upon request. Extremely long continuous lengths are sometimes available depending on specifications. Inquire for feasibility and pricing.

UL File #E64007 / CSA File #082582.

View Measurement Conversion Chart

PTFE heat shrink tubing is available in a 2:1 shrink ratio and 4:1.
The 2:1 is available in up to four different wall thicknesses.
Please note: when ordering our 2:1 PTFE Heat shrink, ORDER AS SIZE AFTER SHRINKING.

Buy Now! Limited Quantities
PTFE 2:1 Standard Wall Heat Shrink
Standard ship time is 3-4 weeks. Please call for immediate availability
*4 ft sections are the maximum on dual wall and specialty tubing

PART # NOMINAL SIZE EXPANDED I.D.
(MIN)
SIZE AFTER SHRINKING RECOVERED WALL
THICKNESS
PRICE / FT
HSPTFE2-0313-FT 5/16" 0.470" 0.33" 0.020"
Qty:  
HSPTFE2-0438-FT 7/16" 0.655" 0.46" 0.025"
Qty:  
HSPTFE2-050-FT 1/2" 0.750" 0.52" 0.025"
Qty:  
HSPTFE2-0625-FT 5/8" 0.930" 0.66" 0.030"
Qty:  
HSPTFE2-0875-FT 7/8" 1.310" 0.91" 0.035"
Qty:  
HSPTFE2-100-FT 1" 1.500" 1.04" 0.035"
Qty:  
PTFE 2:1 - Technical Specifications, click here

Dual Wall PTFE

 

Buy Now! Limited Quantities
PTFE 4:1 Heat Shrink
Standard ship time is 1 week. Please call for immediate availability

*4 ft sections are the maximum on dual wall and specialty tubing

PART # NOMINAL SIZE SIZE AFTER SHRINKING PRICE / FT
HSPTFE4-025-FT 1/4" 0.063"
Qty:  
HSPTFE4-0625-FT 5/8" 0.178"
Qty:  
HSPTFE4-0875-FT 7/8" 0.244"
Qty:  
HSPTFE4-100-FT 1" 0.278"
Qty:  
HSPTFE4-300-FT 3" 0.775"
Qty:  
PTFE 4:1 - Technical Specifications, click here
Dual Wall PTFE

Custom Sizes and Cut Pieces are NON-RETURNABLE and NON-REFUNDABLE

Limiting Oxygen Index (LOI)
The ratio of how much oxygen - as compared to other gases - needs to be present in the air surrounding a particular material in order for that material to burn. The fact that Earth's normal atmospheric air contains around 21% oxygen is used a reference point when materials are classified into burn categories that are based on Limiting Oxygen Index. Substances that are combustible in air containing less than 21% oxygen are considered flammable, while those that burn in the range of anything greater than 21% but less than 28% are typically labeled "slow burning". Any material with an LOI that exceeds 28% is classified as self-extinguishing.

In the table below, you'll find a list of polymers commonly found in our heat shrink tubing and braided sleeving products, along with their LOIs and the burn categories each falls into.


MATERIAL ALTERNATE NAME LOI CATEGORY
ECTFE (Ethylene chlorotrifluoroethylene) Halar 64% Self Extinguishing
Nomex N/A 28% Slow Burning
Nylon 6:6 N/A Ranges fron 24-29% Slow Burning to Self Extinguishing
PET (Polyethylene Terephthalate) Mylar (film), Dacron (fiber) Ranges from 21-34% Slow Burning to Self Extinguishing
Polyethylene (PE) N/A 17% Flammable
Polypropylene (PP) polythene (in the UK) 17% Flammable
Polytetrafluoroethylene (PTFE) Teflon 95% Self Extinguishing
Polyvinyl Chloride (PVC) N/A Ranges from 45-49% Self Extinguishing

 

ARTICLES - A place to find educational articles covering a wide range of topics, all categorized according to your areas of interest.Learn more



HOW-TO CORNER -

 

REVIEW SNAPSHOT®

by PowerReviews
1/2 inch 2:1 PTFE HST PER FOOT
 
5.0

(based on 1 review)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

Reviewed by 1 customer

Displaying review 1

Back to top

(1 of 1 customers found this review helpful)

 
5.0

High Temp Shrink Tubing is Incredible!!!

By Morgan Beaglemann

from Corning, NY

Pros

  • Durable
  • Easy To Install
  • Great Protection

Cons

  • Experimentation Required

Best Uses

  • Repairs

Comments about 1/2 inch 2:1 PTFE HST PER FOOT:

It absolutely solved my problem with protecting a connection in an area of high temp (300 deg F); I could not have solved this problem with out it.

Displaying review 1

Back to top

heat gunHeat Shrink Tools/ Heat Guns
From
We offer a range of options to shrink your tubing, from small torches to ovens.
heat shrink end capsHeat Shrink End Caps
From
Secure the ends of the tubing with these caps available in black in all three sizes.
 
Polyvinylidene Fluoride Heat Shrink TubingPolyvinylidene Fluoride (PVDF, Kynar®) Heat Shrink Tubing
From per 4 FT
PVDF is used in applications where continuous operating temperatures are 150-175°C. It is used where outstanding abrasion and cut-through resistance are required.
PTFE/FEP Dual Wall TubingPTFE/FEP Dual Wall Heat Shrink Tubing
From per FT
Constructed with an outer layer of heat shrinkable PTFE and an inner layer of FEP, it is easy to apply & is designed to provide a tight, moisture-proof bond.

What can make this page better?

We do everything we can think of to provide you with the product specs, images and ordering info you need, but if we’re missing something or still have room to improve, please let us know. Your comments, suggestions and questions are the best tools we have for serving you better!