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Silicone Couplers


Made To Last Connected & Attached


Our couplers are suitable for applications ranging in temperature from -65° to 350°F, and even up to 500°F with extra reinforcement. Any Thermalflex Straight Hose can be cut in as many pieces as you may need.



High-Temperature Resistance:

Designed to withstand high temperatures, making them ideal for use in high-performance automotive, marine, and industrial applications.


Made from premium quality silicone materials that are highly resistant to wear and tear. This means they can withstand the toughest of conditions, including exposure to oil, grease, and other chemicals.


Designed to provide superior performance, with low permeability and high burst pressure ratings. They are also highly flexible and can be easily bent to fit into tight spaces, making them ideal for a range of applications.

Easy Installation:

Designed with ease of installation in mind. They come in a range of sizes and shapes to fit any application, and are easy to install with standard hose clamps. Our hoses also have a smooth interior that minimizes flow resistance, making them ideal for use in high-flow applications.


Offer excellent value for money, thanks to their long lifespan and low maintenance requirements. They are also highly efficient, meaning they can help you save on energy costs and reduce your environmental footprint.

Available Customizations

Ply Configurations:

Available in 3, 4, 5 and 6 ply configurations.

Length Range:

Standard is 3”. Can be customized. Maximum length is 144”.

Diameter Range:

From 0.25” up to 5.50” for 12’ lengths. Up to 20” diameters for up to 36”.

Temperature Ranges:

From -65°F to +350°F with Polyester reinforcement. Add Nomex®
reinforcement for resistance up to +500°F.

Reinforcement Options:

Polyester, Nomex®, Fiberglass, Fluroliner and extra support rings
available upon request.

Colors and Finish Options:

Black, Royal Blue, Red, Brick Red, Green. Finish options in Matte, Glossy, and Satin. Custom colors are available upon request.

Can’t find what you’re looking for? Contact us today and we’ll answer all of your questions.

Applicable Industries


Whether it’s silicone radiator hose, high temperature silicone turbo hose , Thermal Flex has the right products for your demanding applications.

Heavy Truck

THERMAL FLEX is committed to manufacturing the highest quality silicone hoses for the Heavy Truck Industry.


THERMAL FLEX designs and manufactures premium quality silicone hoses for the Marine industry with temperature resistance as low as -65F and as high as 500F.

Aviation and Aerospace

THERMAL FLEX designs and manufactures a wide variety of silicone ducting products for the Aircraft industry.


THERMAL FLEX manufactures silicone hose to meet the most demanding industry application, complying with most standard specifications.