Model: HHST-200
Viton Heat Shrink Tubing (HHST-200) – High Temperature & Chemical Resistant
Viton Heat Shrink Tubing (HHST-200) is manufactured from premium modified fluoroelastomer (Viton), specifically engineered for the most demanding aerospace, automotive, and industrial applications. It offers exceptional resistance to high temperatures, corrosive fluids, fuels, lubricants, acids, and solvents, making it the ultimate protective solution where standard polyolefin tubes would fail.
Combining superior mechanical strength (impact, abrasion, and cut-through resistance) with excellent flexibility, this tubing meets the rigorous military standard SAE-AMS-DTL-23053/13 and UL VW-1 flammability requirements. It provides reliable, long-term protection in extreme environments with continuous operating temperatures up to 200°C.
Key Features & Benefits
- Premium Viton Fluoroelastomer: Delivers unmatched resistance to fuels, oils, hydraulic fluids, acids, and harsh chemicals.
- Extreme Temperature Range: Operates continuously from -55°C to +200°C, with a minimum full recovery temperature of 175°C.
- Superior Mechanical Protection: Highly resistant to impact, abrasion, and cut-through, protecting wires in rugged environments.
- High Flexibility: Despite its robust chemical resistance, the tubing remains highly flexible for easy installation in tight spaces.
- Military & Safety Certified: Fully compliant with SAE-AMS-DTL-23053/13 and UL VW-1 flammability standards.
Common Applications
- Aerospace and military wire harness protection
- Automotive fuel, oil, and hydraulic line insulation
- Chemical processing and refinery equipment wiring
- High-temperature engine compartment sensor protection
- Industrial probe and thermocouple insulation
Product Specifications
- Material: Modified Fluoroelastomer (Viton)
- Standard Color: Black
- Continuous Operating Temperature: -55°C to +200°C
- Minimum Full Recovery Temperature: 175°C
- Shrink Ratio: 2:1
- Certifications: UL, SAE-AMS-DTL-23053/13
Technical Properties
| Item | Test Method | Value |
|---|---|---|
| Operating Temperature | IEC 60216 | -55°C to +200°C |
| Tensile Strength | ASTM D2671 | 8.5 MPa |
| Elongation at Break | ASTM D2671 | 250% |
| Elongation at Break After Aging (250°C, 168 hrs) | ASTM D2671 | 200% |
| Heat Shock (300°C, 4 hrs) | ASTM D2671 | No cracking or dropping |
| Flexibility (100% Modulus) | ASTM D412 | 13.8 MPa |
| Flammability | ASTM D2671 / UL VW-1 | Self-extinguishing in 15 sec |
| Volume Resistivity | ASTM D257 | 109 Ω·cm |
| Dielectric Strength | ASTM D149 | 7.9 kV/mm |
| Copper Corrosion (175°C, 16 hrs) | SAE-AMS-DTL-23053/13 | No corrosion |
Dimensions & Specifications
| Size (Inch / mm) |
As Supplied ID (Min) (mm) |
After Recovered ID (Max) (mm) |
Wall Thickness (Nom) (mm) |
Standard Length (m/spool) |
|---|---|---|---|---|
| 1/8″ (3.2) | 3.2 | 1.6 | 0.76 ± 0.20 | 50 |
| 3/16″ (4.8) | 4.8 | 2.4 | 0.89 ± 0.20 | 50 |
| 1/4″ (6.4) | 6.4 | 3.2 | 0.89 ± 0.20 | 50 |
| 3/8″ (9.5) | 9.5 | 4.8 | 0.89 ± 0.20 | 50 |
| 1/2″ (12.7) | 12.7 | 6.4 | 0.89 ± 0.20 | 30 |
| 3/4″ (19.1) | 19.1 | 9.5 | 1.07 ± 0.30 | 30 |
| 1″ (25.4) | 25.4 | 12.7 | 1.25 ± 0.30 | 30 |
| 1-1/2″ (38.1) | 38.1 | 19.1 | 1.40 ± 0.30 | 15 |
| 2″ (50.8) | 50.8 | 25.4 | 1.65 ± 0.30 | 10 |
Frequently Asked Questions (FAQ)
Q: How does Viton tubing compare to Silicone rubber tubing for high-temperature applications?
A: While both handle high temperatures well, Viton (HHST-200) is specifically chosen for its outstanding resistance to fuels, oils, and harsh chemicals, making it ideal for automotive and aerospace fluid environments. If your application requires extreme flexibility, higher dielectric strength, or pure high-temperature insulation without chemical exposure, our Heat Shrink Silicone Rubber Tubing would be the better choice.
Q: Can this Viton tubing withstand continuous temperatures above 200°C?
A: The maximum continuous operating temperature for Viton tubing is +200°C. If your application requires a continuous operating temperature of exactly 175°C with superior mechanical toughness and flame resistance, you might also consider our 175℃ Heat Shrink PVDF Tubing. However, for temperatures consistently exceeding 200°C, Viton is not recommended.
Q: What is the best heat shrink solution for extreme temperatures up to 260°C?
A: For continuous operating temperatures up to 260°C, Viton is not sufficient. You should use our 260℃ PTFE Heat Shrink Tubing. PTFE offers the highest temperature resistance and the most comprehensive chemical inertness among all fluoropolymer tubing.
Q: What is the minimum temperature required to fully shrink this tubing?
A: The Viton tubing begins to shrink at 175°C. To ensure a tight, fully recovered seal and to activate the material’s memory, it is recommended to use a high-temperature heat gun or propane torch to heat the tube evenly until it reaches at least 175°C.
Q: Is this tubing suitable for protecting wires in direct contact with aviation fuel?
A: Absolutely. Viton fluoroelastomer is renowned for its exceptional resistance to aviation fuels, hydraulic fluids, and lubricants. This is why HHST-200 is widely specified in aerospace and military applications (meeting SAE-AMS-DTL-23053/13) where wire harnesses are exposed to aggressive fluids.
Q: Does the black Viton tubing meet flame retardant standards?
A: Yes, the standard black Viton tubing is highly flame retardant and self-extinguishes within 15 seconds. It is fully certified to meet the UL VW-1 flammability standard, ensuring safety in critical electrical applications.