Shrinkflex PTFE Heatshrink Tubing

Heatshrink That Withstands Extreme Temperature Changes


M23053-12-201-C
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M23053-12-502-C
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What's special about Shrinkflex PTFE Heatshrink Tubing?

  • Its high continuous temperature range makes 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
  • Shrinks to 1/2 of original diameter
  • Click for More Features
  • CSA Approved Passes UL VW-1 Flame Test

PTFE heatshrink tubing is a material that has a broad operational temperature range, excellent dielectric strength, and the lowest coefficient of friction of any other polymer. This heatshrink tubing has a max operating temperature of up to 500 degrees Fahrenheit and is resistant to all common solvents, acids and bases. PTFE also offers a flame retardant quality which makes it great for engine components as well as other applications where flames and fire are a possibility.

PTFE heat shrink tubing is available in a 2:1 shrink ratio and 4:1.
SOLD IN 4 FOOT STICKS

PTFE 2:1 Heat Shrink
Color Part # Description Price
M23053-12-201-C 2:1 PTFE Heatshrink Tubing, 24 AWG - 4 ft stick
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M23053-12-202-C 2:1 PTFE Heatshrink Tubing, 22 AWG - 4 ft stick
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M23053-12-203-C 2:1 PTFE Heatshrink Tubing, 20 AWG - 4 ft stick
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M23053-12-204-C 2:1 PTFE Heatshrink Tubing, 19 AWG - 4 ft stick
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M23053-12-205-C 2:1 PTFE Heatshrink Tubing, 18 AWG - 4 ft stick
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M23053-12-206-C 2:1 PTFE Heatshrink Tubing, 17 AWG - 4 ft stick
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M23053-12-207-C 2:1 PTFE Heatshrink Tubing, 16 AWG - 4 ft stick
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M23053-12-208-C 2:1 PTFE Heatshrink Tubing, 14 AWG - 4 ft stick
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M23053-12-210-C 2:1 PTFE Heatshrink Tubing, 13 AWG - 4 ft stick
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M23053-12-211-C 2:1 PTFE Heatshrink Tubing, 12 AWG - 4 ft stick
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M23053-12-212-C 2:1 PTFE Heatshrink Tubing, 11 AWG - 4 ft stick
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M23053-12-213-C 2:1 PTFE Heatshrink Tubing, 10 AWG - 4 ft stick
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M23053-12-214-C 2:1 PTFE Heatshrink Tubing, 9 AWG - 4 ft stick
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M23053-12-215-C 2:1 PTFE Heatshrink Tubing, 1/8" - 4 ft stick
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M23053-12-216-C 2:1 PTFE Heatshrink Tubing, 8 AWG - 4 ft stick
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M23053-12-217-C 2:1 PTFE Heatshrink Tubing, 7 AWG - 4 ft stick
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M23053-12-218-C 2:1 PTFE Heatshrink Tubing, 6 AWG - 4 ft stick
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M23053-12-219-C 2:1 PTFE Heatshrink Tubing, 5 AWG - 4 ft stick
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M23053-12-220-C 2:1 PTFE Heatshrink Tubing, 4 AWG - 4 ft stick
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M23053-12-221-C 2:1 PTFE Heatshrink Tubing, 3 AWG - 4 ft stick
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M23053-12-222-C 2:1 PTFE Heatshrink Tubing, 1/4" - 4 ft stick
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M23053-12-223-C 2:1 PTFE Heatshrink Tubing, 2 AWG - 4 ft stick
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M23053-12-224-C 2:1 PTFE Heatshrink Tubing, 1 AWG - 4 ft stick
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M23053-12-225-C 2:1 PTFE Heatshrink Tubing, 5/16" - 4 ft stick
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M23053-12-226-C 2:1 PTFE Heatshrink Tubing, 0 AWG - 4 ft stick
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M23053-12-228-C 2:1 PTFE Heatshrink Tubing, 3/8" - 4 ft stick
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M23053-12-229-C 2:1 PTFE Heatshrink Tubing, 7/16" - 4 ft stick
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M23053-12-230-C 2:1 PTFE Heatshrink Tubing, 1/2" - 4 ft stick
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M23053-12-231-C 2:1 PTFE Heatshrink Tubing, 5/8" - 4 ft stick
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M23053-12-232-C 2:1 PTFE Heatshrink Tubing, 3/4" - 4 ft stick
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M23053-12-233-C 2:1 PTFE Heatshrink Tubing, 7/8" - 4 ft stick
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M23053-12-234-C 2:1 PTFE Heatshrink Tubing, 1" - 4 ft stick
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PTFE 4:1 Heat Shrink
Color Part # Description Price
M23053-12-502-C 4:1 PTFE Heatshrink Tubing, 1/8" - 4 ft stick
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M23053-12-503-C 4:1 PTFE Heatshrink Tubing, 3/16" - 4 ft stick
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M23053-12-504-C 4:1 PTFE Heatshrink Tubing, 1/4" - 4 ft stick
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M23053-12-505-C 4:1 PTFE Heatshrink Tubing, 5/16" - 4 ft stick
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M23053-12-506-C 4:1 PTFE Heatshrink Tubing, 3/8" - 4 ft stick
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M23053-12-507-C 4:1 PTFE Heatshrink Tubing, 7/16" - 4 ft stick
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M23053-12-508-C 4:1 PTFE Heatshrink Tubing, 1/2" - 4 ft stick
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M23053-12-510-C 4:1 PTFE Heatshrink Tubing, 5/8" - 4 ft stick
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M23053-12-512-C 4:1 PTFE Heatshrink Tubing, 3/4" - 4 ft stick
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M23053-12-513-C 4:1 PTFE Heatshrink Tubing, 7/8" - 4 ft stick
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M23053-12-514-C 4:1 PTFE Heatshrink Tubing, 1" - 4 ft stick
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M23053-12-516-C 4:1 PTFE Heatshrink Tubing, 1 1/2" - 4 ft stick
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M23053-12-520-C 4:1 PTFE Heatshrink Tubing, 2 1/2" - 4 ft stick
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M23053-12-522-C 4:1 PTFE Heatshrink Tubing, 3" - 4 ft stick
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PTFE 2:1 - Technical Specifications, click here Dual Wall PTFE

PTFE 4:1 - Technical Specifications, click here

  • 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

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

 

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