Model: DRHST
Diesel-Resistant Heat Shrink Elastomeric Tubing (DRHST)
Diesel-Resistant Heat Shrink Elastomeric Tubing (DRHST) is a premium, modified radiation cross-linked elastomer specifically engineered for extreme environments. Its standout feature is exceptional resistance to diesel, hydraulic fluids, and lubricants, combined with long-term heat resistance. Meeting the rigorous SAE-AMS-DTL-23053/16 standard, DRHST provides superior mechanical and environmental protection for cable terminations, splices, and joints, making it the ultimate choice for military vehicles, heavy machinery, and demanding industrial applications.
Key Features & Benefits
- Superior Fluid Resistance: Specifically formulated to withstand prolonged exposure to diesel, hydraulic fluids, and high-temperature lubricants without degrading.
- Extreme Temperature Performance: Maintains flexibility and structural integrity in a wide operating temperature range from -75°C to +150°C.
- Military-Grade Compliance: Meets the stringent SAE-AMS-DTL-23053/16 specification for aerospace and defense applications.
- High Flexibility & Durability: Features a low secant modulus (≤50MPa) and high elongation at break (≥500%), ensuring it won’t crack under vibration or mechanical stress.
- Flame Retardant: Self-extinguishing within 15 seconds, providing an added layer of safety in critical systems.
- Eco-Friendly: Fully RoHS compliant.
Common Applications
- Military and tactical vehicle wiring harnesses and cable joints
- Heavy-duty automotive and off-road equipment exposed to fuel and oils
- Hydraulic line and fluid hose protection in industrial machinery
- Marine and offshore applications requiring high chemical and salt resistance
- Aerospace and defense sector cable termination sealing
Product Specifications & Technical Data
- Model Series: DRHST
- Operating Temperature: -75°C to +150°C
- Minimum Fully Recovery Temperature: 175°C
- Standard Color: Black
- Compliance: SAE-AMS-DTL-23053/16, RoHS Compliant
Technical Properties
| Property | Test Method | Typical Data |
|---|---|---|
| Operating Temperature | IEC 60216 | -75°C to +150°C |
| Tensile Strength | ASTM D 2671 | ≥ 13 MPa |
| Elongation at Break | ASTM D 2671 | ≥ 500% |
| Elongation at Break After Aging (160°C / 168 hrs.) | ASTM D 2671 | ≥ 220% |
| Heat Shock (215°C / 4 hrs.) | ASTM D 2671 | No cracking or dropping |
| Flexibility (2% Secant Modulus) | ASTM D 882 | ≤ 50 MPa |
| Flammability | ASTM D 2671 | Self-extinguish in 15 sec. |
| Volume Resistance | ASTM D 876 | ≥ 109 Ω·cm |
| Fluid Resistance: Tensile Strength (Diesel 70°C, Hydraulic 70°C, Lubricant 100°C / 24 hrs.) |
ISO 37 | ≥ 10 MPa |
| Fluid Resistance: Elongation (Diesel 70°C, Hydraulic 70°C, Lubricant 100°C / 24 hrs.) |
ISO 37 | ≥ 300% |
Dimensions & Specifications
| Size (Inch) | Size (mm) | As Supplied I.D. (mm) Min | After Recovered I.D. (mm) Max | Wall Thickness (mm) Nom. | Standard Length (m/spool) |
|---|---|---|---|---|---|
| 1/8 | 3.2 | 3.2 | 1.6 | 0.76 ± 0.15 | 100 |
| 3/16 | 4.8 | 4.8 | 2.4 | 0.84 ± 0.15 | 100 |
| 1/4 | 6.4 | 6.4 | 3.2 | 0.89 ± 0.15 | 100 |
| 3/8 | 9.5 | 9.5 | 4.8 | 1.02 ± 0.20 | 50 |
| 1/2 | 12.7 | 12.7 | 6.4 | 1.22 ± 0.20 | 30 |
| 3/4 | 19.1 | 19.1 | 9.5 | 1.45 ± 0.28 | 30 |
| 1 | 25.4 | 25.4 | 12.7 | 1.78 ± 0.28 | 30 |
| 1 1/2 | 38.1 | 38.1 | 19.1 | 2.41 ± 0.41 | 15 |
| 2 | 50.8 | 50.8 | 25.4 | 2.79 ± 0.41 | 15 |
| 3 | 76.0 | 76.0 | 38.0 | 3.18 ± 0.50 | 15 |
| Remarks: 1. Custom sizes and specific cutting lengths are available upon request. 2. For optimal sealing in fluid-heavy environments, ensure the substrate is clean and dry before applying heat. |
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Frequently Asked Questions (FAQ)
Q: What makes DRHST different from standard heat shrink or dual-wall tubing?
A: Unlike standard polyolefin or our general-purpose Dual Wall Heat Shrink Tubing, DRHST is made from a specially modified radiation cross-linked elastomer. Its primary advantage is exceptional resistance to diesel, hydraulic fluids, and high-temperature lubricants, preventing the tubing from swelling, cracking, or degrading in harsh chemical environments.
Q: Is DRHST suitable for military and heavy-duty automotive applications?
A: Yes, absolutely. It is specifically designed to meet the rigorous SAE-AMS-DTL-23053/16 specification, making it fully qualified for use in military vehicles, tactical equipment, and heavy-duty automotive wiring harnesses. For more detailed installation guides, wiring tips, and specific use cases in automotive systems, please visit our Automotive & Military Vehicle Applications Guide.
Q: What is the recommended heating method for installing DRHST?
A: Due to its thick wall and high recovery temperature (175°C), we recommend using a high-temperature hot air gun or a propane torch with a soft, wide flame. Heat evenly from the center outward to ensure the elastomer shrinks uniformly and forms a tight, fluid-resistant seal without scorching.
Q: How does DRHST perform in extreme cold environments?
A: It performs exceptionally well. With an operating temperature range down to -75°C and a low secant modulus, the tubing remains highly flexible and resistant to cracking even in arctic or severe winter conditions.