Neoprene® Heat Shrink Tubing

Military-Grade Heat Shrink for the Ultimate Protection in Automotive & Aerospace Projects


What's special about Neoprene?

  • Resists lubricating oil, aviation and ground-vehicle fluids, and hydraulic fluids.
  • Made to meet aspects of MIL-I-23053/1 specs.
  • Excellent for cable harnesses and wire bundles in military and aerospace industries.
  • Click for More Features
RoHS Compliant


Other sizes available upon request with a ship time up to 2 months. Please call for availability
Custom Sizes and Cut Pieces are NON-RETURNABLE and NON-REFUNDABLE

Part #Nominal SizeSize After ShrinkageSpool LengthWeightColorPrice
HSNEO-025-SP0.25"0.125"250 ft.3.8 lbsBlack
Manufacturer Direct
HSNEO-0375-SP0.375"0.187"100 ft.2.5 lbsBlack
Manufacturer Direct
HSNEO-050-SP0.50"0.25"100 ft.3.5 lbsBlack
Manufacturer Direct
HSNEO-0625-SP0.625"0.313"100 ft.4.7 lbsBlack
Manufacturer Direct
HSNEO-075-SP0.75"0.375"100 ft.6 lbsBlack
Manufacturer Direct
HSNEO-0875-SP0.875"0.428"100 ft.8.3 lbsBlack
Manufacturer Direct
HSNEO-100-SP1"0.50"100 ft.8.5 lbsBlack
Quick Ship
HSNEO-125-SP1.25"0.626"100 ft.13 lbsBlack
Manufacturer Direct

For Neoprene® Technical Specifications, click here
For Military Specifications and a manufacturers' cross reference, click here

Our Chlorinated Elastomer (Neoprene®) heat shrink tubing is used for insulation, strain relief, and abrasion protection on cable harnesses and wire bundles in military and aerospace industries. It provides fluid and solvent resistance, including lubricating oil, aviation and ground-vehicle fuels and hydraulic fluids. Neoprene remains flexible at low temperatures.

Neoprene Heat Shrink is RoHS (Restriction of Hazardous Substances) Compliant (PDF)


  • Operating temperature -75°C to 120°C (-103°F to 248 °F)
  • Shrink ratio: 2:1 in the radial direction
  • Minimum shrink temperature: 135 °C
  • Flammability: MIL-I-23053/1 Class 1 and Class 2
  • Meets all aspects of MIL-I-23053/1 specifications
  • Measurement Conversion Chart


shrink ratio drawing

Internal Diameter Min.
Internal Diameter Max.
Min.Total Wall Thickness
inch in. mm in. mm in. mm
1/8" 0.125 3.2 0.062 1.57 0.028 0.70
3/16" 0.188 4.8 0.093 2.36 0.030 0.75
1/4" 0.251 6.4 0.125 3.18 0.031 0.80
3/8" 0.378 9.6 0.187 4.75 0.035 0.90
1/2" 0.500 12.7 0.250 6.35 0.041 1.05
5/8" 0.625 16.0 0.315 8.00 0.051 1.30
3/4" 0.752 19.31 0.375 9.53 0.057 1.45
7/8" 0.875 22.2 0.433 11.0 0.065 1.65
1" 1.0 25.4 0.500 12.7 0.067 1.70
1-1/4" 1.250 31.8 0.626 15.9 0.087 2.20
1-1/2" 1.50 38.1 0.751 19.1 0.096 2.45
2" 2.0 50.8 1.0 25.4 0.112 2.85
3" 3.0 76.2 1.5 38.1 0.126 3.20


Specification Values

Test Methods
Physical Unaged Tensile strength ASTM D 638 Min 1.1 kgf/mm²
Elongation Min 250%
Aged Tensile strength ASTM D 638
150° C / 168hrs
Min 0.85 kgf/mm²
Elongation Min 200%
Density ASTM D-792 Max 1.40 g/cm² @23°C
Heat shock MIL-I-23053 Pass @ 200° C x 4hrs
Low temperature flex MIL-I-23053 No crack @ -75° C
Electrical Dieletric strength ASTM D 876 Min 300V / mil
Volume resistivity ASTM D 876 Min 1x1011Ω - cm
Chemical Copper corrosion MIL-I-23053
150° C / 16hrs
No corrosion
Fluid resistance
Tensile strength
Dielectric strength
23° C / 24hrs

Min 0.85 kgf/mm²
Min 200%
Min 250V/mil
Flammability MIL-I-23053 Pass

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.

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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