Did you know that heat shrink tubing is a vital tool in the production and operation of flight vehicles in the aviation and aerospace industries? As heat shrink tubing is designed to protect, insulate, and support the integral components of mechanical devices, including offering flame retardancy, choosing the proper sized tubing is key to ensuring the functionality of all mechanisms.
Factors to Consider When Selecting Heat Shrink Tubing for Aerospace and Aviation
Below are some factors to consider when choosing the best heat shrink tubing in the aviation and aerospace fields.
Original Component Diameter
The primary factor is the diameter of the component the heat shrink tubing will cover. Measure the diameter of the wire, cable, or bundle to determine the appropriate tubing size. An accurate measurement is crucial for a proper fit and to ensure the tubing shrinks uniformly.
Shrink Ratio
Shrink ratio refers to the percentage the tubing shrinks in diameter when heated. Common ratios include 2:1, 3:1, and 4:1. For instance, a 3:1 ratio means the tubing will shrink to one-third of its original diameter. Select a ratio that ensures a snug fit after application.
Single Wall vs. Dual Wall
Single wall tubing is the standard product, offering basic insulation and protection. Dual wall heat shrink tubing includes an inner layer of adhesive that melts and flows when heated, creating an environmental seal.
Application and Functionality
Consider the specific application and desired functionality when selecting heat shrink tubing. For example, a tight seal is essential for environmental protection, while room for movement may be necessary in connectors.
Environmental Considerations
Extreme temperatures and vibrations in aerospace and aviation can impact material selection and shrinking behavior. Studies show that exposure to harsh environments can affect tubing performance, so select materials that maintain integrity under stress.
Comparing Heat Shrink Tubing for Aerospace and Aviation
|
Wall Type |
Shrink Ratio (Percentage Diameter Reduction) |
Applications |
|
Single Wall Cut |
2:1 (50%) |
General purpose insulation, strain relief, color coding, cable bundling (offers good flexibility). |
|
Single Wall Cut |
3:1 (66%) |
Higher shrink ratio than basic 2:1 to allow for better fit such as when having to slide over connectors and transition to smaller wires. |
|
Dual Wall Cut |
2:1 (50%) |
Provides additional abrasion resistance and insulation compared to a single wall and is good for strain relief and bundling. |
|
Dual Wall Cut |
3:1 (66%) |
Offers the benefits of the dual wall with a tighter seal after shrinking, suitable for environmental protection and applications requiring some flexibility. |
|
Single Wall Printed |
2:1 (50%) |
General purpose applications with the added benefit of printed legends or markers for identification purposes. |
|
Single Wall Printed |
3:1 (66%) |
Similar to single wall cut 3:1, but with printed information for identification in tight spaces or complex assemblies. |
|
Dual Wall Printed |
2:1 (50%) |
Combines the advantages of dual walls (abrasion resistance, insulation) with printed information for clear identification. |
|
Dual Wall Printed |
3:1 (66%) |
Offers the most robust protection with a tight seal and printed information for applications requiring durability and clear identification. |
Understanding Heat Shrink Tubing Wall Thickness
Heat shrink tubing single and double wall products offer durability, flexibility, and superior protection and insulation for various applications. A thin wall offers better flexibility, while a thicker wall provides better insulation and mechanical strength.
In aerospace and aviation, weight considerations and durability requirements also influence wall thickness selection. Thicker walls provide more protection but add weight. Evaluate your project's needs to strike the right balance. For instance, high-temperature areas may require thicker tubing for added insulation.
Industry standards like AS/EN 9100 influence material selection for aerospace quality management systems. These standards ensure consistency and reliability in materials used in critical applications.
Advanced Considerations for Aerospace & Aviation Applications
In addition to considering the size, function, and environment, below are some other factors to consider before choosing heat shrink for aerospace and aviation.
- Flame Retardant Properties: Flame retardant heat shrink tubing enhances safety in aerospace and aviation applications. It reduces the risk of fire and prevents the spread of flames.
- UV Resistance: Prolonged UV exposure can degrade materials, compromising their protective qualities. Choose UV-resistant tubing to ensure longevity and reliability in sun-exposed environments.
- Chemical Compatibility: Choose heat shrink tubing materials that are compatible with substances often found in the aerospace and aviation industry. Chemical resistance ensures the tubing maintains its protective properties even in harsh conditions.
Choosing the Right Heat Shrink Tubing for Your Application
Choosing the right heat shrink tubing is crucial when it comes to maintaining safety and security within the aerospace and aviation industry. ShrinkShop offers expert guidance to help customers choose the proper size, material, and shrink ratio for their heat shrink.
As per SAE International, both the aviation and aerospace industries have stringent specifications when it comes to heat shrink tubing used on components and wiring. ShrinkShop has valued experience working with NASA and adheres to all industry protocols to ensure the most reliable heat shrink tubing products.
Discover Why ShrinkShop Is the Heat Shrink Expert for All Industries
With more than 30 years of experience with all things heat shrink, ShrinkShop provides top-quality products for the aviation and aerospace industry. In addition to our partnership with NASA, our custom-printed heat shrink tubing is used in the telecommunications, electrical, automotive, medical, and military fields. Contact us today to learn more about our high-quality products.