Electrical Supplies > Heat Shrink > 4:1 Heat Shrink Tubing
4:1 Heat Shrink Tubing
Over-expanded Flexible Flame Retardant Polyolefin Tubing
Specially Designed to Fit Over for Those Oversized Components or Connectors
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4:1 Heat Shrink Tubing  
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What's special about 4:1 Heat Shrink Tubing?
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Our 4:1 over-expanded flexible, flame retardant heat shrinkable polyolefin tubing is used for special circumstances such as jacket retrofitting or repair and electrical insulation of wire assemblies with oversize components or connectors.
The over-expanded product configuration easily fits over the end of a connector, and shrinks down to 25% of its original diameter to fit snugly over the wires. Our tubing is available in by the single foot. Available in Black only.
Our 4:1 heat shrink is also available with a "dual-wall" construction. During application, the inner layer melts and flows, creating an adhesion layer to ensure a snug fit to your harness and/or connector. It is also recommended for applications that require a water-tight seal to protect wire, cable and connector components.
- Due to the nature of heat shrink, it does shrink length wise as well as the diameter. 4:1 heat shrink will shrink 14% or less in the axial direction during the shrink process.
- 4:1 Heat Shrink is RoHS Compliant, view the certificate here
- View Military Specifications and Manufacturers' Cross Reference
4:1 Heat Shrink
PROPRIETARY |
TEST METHOD |
TYPICAL VALUE |
| Physical | ||
| Tensile Strength (psi) | ASTM D 638 | 1500 min. |
|---|---|---|
| Elongation (%) | ASTM D 638 | 200 min. |
| Specific Gravity | ASTM D 792 | 1.35 max. |
| Low Temperature Flexibility -55°C | MIL-DTL-23053 | no cracking |
| Heat Shock 4 hours at 250°C | MIL-DTL-23053 | no cracking |
| Heat Resistance (175°C, 168 hrs.) Elongation (%) |
ASTM D638 | 100 min. |
| Secant Modulus (psi) | ASTM D 882 | 2.5 x 10,000 max. |
| Longitudinal Change (%) | MIL-DTL-23053 | ±5 |
| Electrical | ||
| Dielectric Strength | ASTM D 876 | 500 min. |
| Volume Resistivity | ASTM D 876 | 1.0 x 10,000 min. |
| Chemical | ||
| Corrosion (175°C, 16hrs) | MIL-DTL-23053 | no corrosion |
| Water Absorption (%) | ASTM D 570 | 0.5 max. |
| Fluid Resistance (23°C, 24 hrs.) Tensile Strength (psi) |
MIL-I-23053 | 1000 min. |
| Flammability | UL 224 VW-1 | pass |
| Shrink Temperature, Nominal | -- | 90°C |
| Application (Typical) | General Purpose Over Expanded |
|---|---|
| Recovery Temperature | 90°C |
| Flame Retardant | YES |
| Continuous Operating Temperature | -55 to 135°C |
| Flexibility | Excellent |
| Abrasion Resistance | Good |
| Solvent Resistance | Good |
| Standard Colors | Black |
| UL Rating & File No. (Subject 224) | 125°C, 600V VW-1 (Jacket only for dual wall) E48762 |
| UL Catalog No. | 826 Suffix 3X |
Specification reference:
MIL-I-23053/5 Class 1 and Class 3. MIL-R-46846, Type V
UL 224 125°C, 600 V, VW-1 File E48762 YDPU2
4:1 Adhesive Heat Shrink Tubing
Minimum Shrink Temperature: 90°C
Product Dimensions
| SIZE (In.) |
EXPANDED | RECOVERED | ||||||
| MINIMUM ID | MAXIMUM ID | MINIMUM TOTAL WALL THICKNESS (TOTAL WALL) |
MINIMUM WALL THICKNESS (ADHESIVE WALL) |
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| In. | mm | In. | mm | In. | mm | In. | mm | |
| 3/16" | 0.1575 | 4 | 0.039 | 1.0 | 0.0354 | 0.90 | 0.0197 | 0.50 |
| 5/16" | 0.3150 | 8 | 0.079 | 2.0 | 0.0354 | 0.90 | 0.0197 | 0.50 |
| 1/2" | 0.4724 | 12 | 0.118 | 3.0 | 0.0512 | 1.30 | 0.0236 | 0.60 |
| 3/4" | 0.6300 | 16 | 0.157 | 4.0 | 0.0630 | 1.60 | 0.0300 | 0.76 |
| 1" | 0.9449 | 24 | 0.236 | 6.0 | 0.0827 | 2.10 | 0.0311 | 0.79 |
| 1-1/4" | 1.2598 | 32 | 0.315 | 8.0 | 0.0906 | 2.30 | 0.0409 | 0.90 |
| 2" | 2.0472 | 52 | 0.5118 | 13.0 | 0.0984 | 2.50 | 0.0409 | 0.90 |
| 3" | 2.9921 | 76 | 0.7480 | 19.0 | 0.0984 | 2.50 | - | - |
| 4" | 4.0157 | 102 | 1.3385 | 34.0 | 0.1062 | 2.70 | - | - |
*Metric sizes available for special orders.
STANDARD WALL
Please Note: Our Diameters for Heat Shrink Tubing are measured as ROUND TUBE, NOT FLAT
Due to the nature of the materials, all braided sleeving, wire loom, heat shrink, and spiral wrap products sold by the foot will not be refunded IN FULL if they are cut up in sections of 20' or shorter. 50% restocking fee on returns of 20 feet or less. 25% restocking fee if there is a reorder.
| NOMINAL ID | MINIMUM ID BEFORE SHRINKING |
MAXIMUM ID AFTER SHRINKING |
MINIMUM ID AFTER SHRINKING |
PART # per FOOT | PRICE / FOOT BLACK |
| 1/2" | 0.470" | 0.118" | 0.043" | HS4-050-FT | $2.75  |
| 5/8" | 0.75" | 0.188" | 0.051" | HS4-075-FT | $4.75 |
| 1" | 0.945" | 0.236" | 0.059" | HS4-100-FT | $8.75 |
| 1-1/2" | 1.50" | 0.374" | 0.059" | HS4-150-FT | $14.00 |
| 4:1 Heat Shrink Technical Specifications, click here For Military Specifications and Manufacturers' Cross Reference, click here |
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Normally our policy is to supply continuous lengths. If it is absolutely necessary to receive one continuous length, please specify.
Dual Wall
Please Note: Our Diameters for Heat Shrink Tubing are measured as ROUND TUBE, NOT FLAT
Due to the nature of the materials, all braided sleeving, wire loom, heat shrink, and spiral wrap products sold by the foot will not be refunded IN FULL if they are cut up in sections of 20' or shorter. 50% restocking fee on returns of 20 feet or less. 25% restocking fee if there is a reorder.
| NOMINAL ID | MINIMUM ID BEFORE SHRINKING |
MAXIMUM ID AFTER SHRINKING |
MINIMUM ID AFTER SHRINKING |
PART # | COLOR | PRICE / FOOT |
| 3/16" | 0.1575" | 0.039" | 0.0354" | HS4A-0188-FT | Black | $0.95 |
| 5/16" | 0.3150" | 0.079" | 0.0354" | HS4A-0313-FT | Black | $1.12 |
| 1/2" | 0.4724" | 0.118" | 0.0512" | HS4A-050-FT | Black | $2.56 |
| 3/4" | 0.6300" | 0.157" | 0.0630" | HS4A-075-FT | Black, Red | $2.62 |
| 1" | 0.9449" | 0.236" | 0.0827" | HS4A-100-FT | Black | $4.12 |
| 1-1/4" | 1.2598" | 0.315" | 0.0906" | HS4A-125-FT | Black | $4.93 |
| 2" | 2.05" | 0.512" | 0.100" | HS4A-200-FT | Black | $5.50 |
| 4 foot sections are the maximum on Dual Wall and Specialty Tubing Click here for 4:1 Adhesive Lined Tubing (Dual Wall) specifications |
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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 -
How to use Heat Shrink Tubing
Terminate the ends of your Braided Sleeving with Heat Shrink
How do we measure Heat Shrink?
CATALOG - PDF
For your convenience, we have made our brochure and catalogs available online in PDF format. Downloading the PDF catalog will take you no more than 5 minutes, so you won’t have to wait days for the print catalog. PDF catalogs include links to our products: just click on the hyperlinked product headings, and you’ll be directed right to our website.
Office 
PDF Catalog 2 MB
Automotive PDF Catalog 2.6 MB
Aerospace/Aircraft PDF Catalog 2 MB
Utilities & Energy PDF Catalog 3.7 MB
Datacom/Telecom PDF Catalog 5.7 MB
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