Dunbar 1635F Mil-Spec QPL Approved 2:1 Heat Shrink Tubing

Dunbar 1635F Milspec 2:1 Heat Shrink Tubing

The most popular Heat shrink tubing for electrical insulation and bonding cables in a wide range of colors and shrink sizes.  2 to 1 Shrink tubing means the material shrinks to half of the original diameter when heated using an oven or heat gun.


  • 2:1 Shrink Ratio (shrinks to 50% of its original diameter)
  • SAE AS23053/5 Class 1 & 3, Class 2 is Clear (Formerly AMS-DTL-23053/5 Class 1, 2 & 3)
  • UL 224: VW-1, 600V, 125°C (File Number: E319303, except clear)
  • RoHS & REACH Compliant
  • Maximum Continuous use temperature 135°C
  • Colored Heat Shrink Tubing: We carry 12 standard heat shrink colors: Black, Clear, Red, White, Blue, Yellow, Brown, Gray, Orange, Green, Violet and Yellow/Green
  • Shrink Temperature of 90°C and operating temperature of -55°C to + 135°C
  • Crosses to : Sumitomo B2, Raychem RNF-100, Alpha FIT-221, 3M FP301 heat shrink, Canusa CPX-100
  • Typical applications include: Insulation, Wire Identification, Wire Bundling, Mechanical Protection, Color Coding, Lightweight Harnessing, Physical/Electrical Protection of Components, Strain Relief, and Solder Insulation.
  • NOTE – This is a QPL (Qualified Products List) Approved product which not only meets the requirements of what’s formerly known as AMS-DTL-23053/5, but it is certified to the new SAE AS23053/5 Standard. 

For a lower cost 2:1 heat shrink product that also meets, but is not certified to this standard, click here

Diameter Mil Specification #ID Before ShrinkID After ShrinkWall After Shrink Flat Width Buy
3/64" SAE AS23053/5-1010.046"0.023"0.018"1/16"
500 FT/SPOOL$92.40
1/16" SAE AS23053/5-1020.063"0.031"0.018"1/8"
500 FT/SPOOL$94.80
3/32" SAE AS23053/5-1030.093"0.046"0.019"1/8"
500 FT/SPOOL$100.80
1/8" SAE AS23053/5-1040.125"0.062"0.019"3/16"
500 FT/SPOOL$126.00
3/16" SAE AS23053/5-1050.187"0.093"0.019"5/16"
250 FT/SPOOL$73.80
1/4" SAE AS23053/5-1060.25"0.125"0.026"3/8"
250 FT/SPOOL$90.00
3/8" SAE AS23053/5-1070.375"0.187"0.026"9/16"
200 FT/SPOOL$82.08
1/2" SAE AS23053/5-1080.5"0.25"0.029"13/16"
200 FT/SPOOL$94.08
3/4" SAE AS23053/5-1090.75"0.37"0.035"1-3/16"
100 FT/SPOOL$62.64
1" SAE AS23053/5-1101"0.5"0.039"1-9/16"
100 FT/SPOOL$147.60
1-1/4" N/A1.26"0.63"0.039"1-15/16"
100 FT/SPOOL$147.60
1-1/2" SAE AS23053/5-1111.5"0.75"0.039"2-3/8"
100 FT/SPOOL$195.60
2" SAE AS23053/5-1122"1"0.045"3-1/8"
100 FT/SPOOL$348.00
3" SAE AS23053/5-1133"1.5"0.049"4-3/4"
100 FT/SPOOL$562.56
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