silicone sponge tube
The silicone foam tube is a closed-cell elastomer material. It is expanded when it is heat-cured to generate many tiny bubbles that are not connected through the passage of the material. Thus creating excellent sealing and insulating resistance to fit a variety of applications. We offer a wide range of sizes with inner diameter from 2mm up to 60mm and outer diameter from 6mm up to 80mm. We can customize the length and thickness based on your exact requirements. Our silicone foam tube comes with round type, rectangular type, irregular type, etc. that match your specific requirements.
|
Material |
100% gas-phase silicone rubber |
|
Manufacturing process |
rubber extrusion, hot air vulcanization, post-vulcanization, cooling package |
|
Inner diameter (ID) |
from 2mm to 60mm |
|
Outer diameter (OD) |
from 6mm to 80mm |
|
Color |
red, white, gray and black (as standard) |
|
MOQ |
500 meters |
|
Tolerance |
RMA Standard Cross-sectional Tolerance E2, or per request |
Technical Data Sheet
|
Hardness(Shore C) |
Density(g/cm3) |
Tear Strength(KN/m) |
Tensile Strength(Mpa) |
Elongation at break (%) |
Compression Set(%) |
|
15-75±5 |
0.3-1.0±0.1 |
≥0.5 |
≥0.8 |
480 |
≤3% |
Company Profile
Certifications
Silicone Sponge Tube: Frequently Asked Questions
Q1: What are the key advantages of silicone sponge tube compared to solid silicone tubing?
A: Silicone sponge tube offers superior compressibility, lighter weight, and better flexibility than solid silicone tubing. The closed-cell sponge structure provides excellent cushioning and sealing properties while maintaining temperature resistance from -60°C to 200°C. It's ideal for applications requiring compression recovery, thermal insulation, or vibration dampening.
Q2: How does the closed-cell structure benefit fluid handling applications?
A: The closed-cell structure prevents fluid absorption and maintains dimensional stability when exposed to moisture. This makes our silicone sponge tube suitable for compressed air systems, low-pressure fluid transfer, and environments where hygiene is crucial, as the material won't trap contaminants or promote bacterial growth.
Q3: Can the tubes be customized for specific medical or food applications?
A: Yes, we offer medical-grade and food-grade versions that comply with FDA 21 CFR 177.2600 and USP Class VI standards. These tubes are manufactured in controlled environments and can be sterilized using autoclave, gamma radiation, or ETO methods without compromising their sponge structure or performance.
Q4: What compression recovery performance can be expected?
A: Our silicone sponge tube typically exhibits compression set values of ≤20% after 22 hours at 70°C, ensuring reliable long-term sealing performance. The material quickly returns to its original shape after compression removal, maintaining consistent sealing force in dynamic applications.
Q5: Are custom sizes and colors available for specific identification needs?
A: We provide full customization capabilities including inner diameters from 2mm to 50mm, wall thicknesses from 1mm to 10mm, and various colors for coding or aesthetic purposes. Custom printing or striping is also available for specific identification requirements in complex systems.
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