Flexible Silicone LED Strip Diffuser Exterior LED Channel 270° Double Side Emitting 12*25mm

Model: FLNLT-ST1225 Review stars 0.0 (0 Reviews) Various options in stock
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Product Information

Achieve unparalleled, wrap-around illumination with the FLNLT-ST1225 Flexible Silicone LED Strip Diffuser. Engineered with a unique dome top profile, this 12x25mm channel is designed for double side emitting, casting a broad 270° beam of light that creates a stunning halo effect. It's the ideal solution for transforming standard 10mm-wide LED strips into professional, dot-free neon flex lights. Constructed from durable, food-grade silicone, this diffuser is not only incredibly flexible for creating custom curves and shapes but also robust enough for any indoor or outdoor project, thanks to its IP67 waterproof and UV-resistant properties.

For a perfect, hassle-free result, take advantage of our unique assembly offer: purchase any of our compatible 10mm LED strips such as our RGBW lights along with this silicone tube, and our technicians will assemble your custom neon light for you, free of charge. Create dynamic architectural highlights, captivating signage, or immersive landscape lighting with a seamless, professional finish.

Key Features

Expansive 270° Double-Sided Beam

Provides a massive field of light, illuminating surfaces from both sides for a unique, wrap-around glow unlike standard diffusers.

High-Performance Silicone Body

Made from premium food-grade silicone that is UV-resistant, flame-retardant, and operates in extreme temperatures (-50°C to 250°C).

IP67 Weatherproof Protection

Fully dust-tight and protected against water immersion, making it a reliable choice for outdoor facades, landscape, and wet interior locations.

Technical Highlights

  • There are two identical compartments inside; you can install LED strips on either side or on both sides as you like.

Product Specifications

Parameter Details
Model FLNLT-ST1225
Tube Material Food-grade Silicone
Lighting Direction Double Side-emitting
Beam Angle 270°
External Dimensions 12mm (Width) x 25mm (Height)
Inner Width 11.5mm / 0.45in
Maximum LED Strip Width 10mm / 0.39in
Available Lengths 1m (3.28ft), 2m (6.56ft), 5m (16.4ft), or continuous roll up to 50m (164ft)
Weight 243 g/m
Waterproof Rating IP67 (with sealed end caps)
UV Resistant Yes
Working Temperature -50°C to 250°C
Warranty 3 Years

Application Scenarios

Architectural & Landscape Lighting Outline building facades, railings, and pathways to create a dramatic, dual-sided lighting effect. The IP67 rating ensures durability in any outdoor environment, from city parks to hotel exteriors.
Custom Neon Signage & Art The diffuser's high flexibility allows for the creation of intricate letters, logos, and artistic shapes. Its 270° glow provides a vibrant, eye-catching look perfect for retail displays, event decor, and cultural tourism projects.
Interior Design & Accent Lighting Use this double side emitting channel to create unique cove lighting, illuminate shelving from both top and bottom, or design custom light fixtures that cast a wide, ambient glow in hotels, restaurants, and modern homes.
bending neon strip lights
Application example: The silicone diffuser used to create illuminated building outlines.
flexible neon light strip
Example of the diffuser used in an outdoor landscape lighting project.

How to Use This Silicone LED Diffuser

  1. Select a compatible LED strip (max 10mm width). Note that the LED strip is sold separately.
  2. Cut both the silicone diffuser and LED strip to your desired length using sharp scissors or a blade.
  3. Securely tie a thin, strong guide string to the end of your LED strip.
  4. Feed the guide string through the entire length of the silicone diffuser.
  5. Gently and evenly pull the LED strip through the channel using the guide string. 
  6. Solder wires to the LED strip connection points as required.
  7. Apply silicone adhesive to the end caps and press them firmly onto both ends of the tube to create an IP67 waterproof seal.
  8. Mount the finished neon light using your chosen method: mounting clips for direct surface fixing, aluminum channel for straight runs, or flexible profiles for complex curves.

三种修复LED霓虹灯管的方法

What's in the Box

  • 1x Flexible Silicone LED Diffuser (in selected length)
  • A set of End Caps (half with holes, half without)
  • Mounting Clips (if the 'Neon Tube + Clips' kit is selected)

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Downloads

Files for FLNLT-ST1225
Need this page for a project file or an engineering check? Click Open PDF, then save or print it from your browser. For CAD drawings, IES files or a signed test report, contact our engineers and quote the model number.

Images

These images were taken with Canon EOS 5D Mark IV and the studio light source is provided by Ra 98's full spectrum LED strip to realistically reproduce the colors of the item itself. All copyrights are created by the superlightingled team, please feel free to browse and download if you are a registered user!

Flexible Silicone LED Strip Diffuser Exterior LED Channel 270° Double Side Emitting 12*25mmFlexible Silicone LED Strip Diffuser Exterior LED Channel 270° Double Side Emitting 12*25mmFlexible Silicone LED Strip Diffuser Exterior LED Channel 270° Double Side Emitting 12*25mmFlexible Silicone LED Strip Diffuser Exterior LED Channel 270° Double Side Emitting 12*25mmFlexible Silicone LED Strip Diffuser Exterior LED Channel 270° Double Side Emitting 12*25mm

LED Strip Lights Guide

Here you can learn anything about LED strip lights — pick the topic you are interested in to go deeper. We cover LED strip lights, power supplies, controllers, accessories, and how to connect LED strip lights.  You can also watch our demo videos.


Led strip lights

Everything you need to know before you buying led strip lights

Top 6 Considerations Before Buying LED Strip Lights

1. Where do I want to place the LED strip lights? Indoor or outdoor?

• What are waterproof led strip lights?

• How to cut and connect waterproof led strip lights?

2. How much LED brightness do I need?

3. The working voltage is available?

• 5V VS 12V VS 24V led strips

• AC VS DC 

4. How long is the LED strip light suitable for my project?

5. Do I need an LED light controller to adjust the LED color and brightness?

6. How to power the LED strip lights?

What are led strip lights?

1. How do led strip lights work?

2. How long can you run an LED strip?

3. How long do LED strip lights last?

Is it worth getting led strip lights?  

1. Do LED strip lights use a lot of electricity?

2. Why are LED lights energy efficient?

3. Are LED Strip Lights sustainable?

4. What are the pron and cons of led strip lights?

5. Precautions for led strip lights

Are led strip lights safe?

1. Do LED strip lights overheat?

2. How do you stop LED strips from overheating?

3. Can LED strips catch fire?

4. Is it safe to sleep with LED strip lights on?  

What are the types of led strip lights? Flexible led strip lights VS rigid led strip lights -

1. What are flexible led strip lights?

2. What are rigid led strip lights?

3. What happens if you bend LED strip lights?

4. What is the difference between flexible led strips and rigid led strips?

How to cut led light strips? 

1. Can you cut led light strips? 

2. What happens if you cut an led strip?

3. How to cut led strip lights?

4. How to connect RGB color changing led strip lights with a connector?

5. How to know what your led strip light is?

How to choose the correct SMD led for your strip?

Which is the brightest SMD LED?

What does SMD 5050 mean?

How many lumens is a 5050 SMD LED?

How to know what type of LED strip?

What is the difference between 2835 and 5050 LED?

 

COB led strip light

What is COB led strip light?

1. What is COB?

2. What is the COB production process? 

3. Different types of COB strip lights

4. What is the difference between COB and SMD led strip lights?

5. What is the difference between COB and LED?

6. Are COB led strips better?

7. How to cut and connect COB led strips?

8. How to install COB led strip lights?

9. Can COB light strips use aluminum channels?

10. Why choose superlightingled?

 

Led neon lights

What are led neon lights?

1. What is led neon light?

2. What are neon led lights used for?

3. Are led neon lights good?

4. How to choose led neon rope lights?

5. Are led neon ropes use DC or AC?

6. Can you change the light-emitting angle or the luminous way of neon led strip?

7. Silicone Tube VS PVC Tube

How to make led neon lights?

1. How to cut led neon lights

2. Can led neon lights be connected?

3. Easy 7 steps to make led neon lights

4. How to install led neon rope?

 

Addressable led strip

Ultimate Guide to Choosing the Right Addressable LED Strip

What is an addressable LED strip?

Can you cut addressable LED strips?

How to judge if an LED strip is individually addressable?

How to choose the best DC12V addressable led strips?

How to choose the best DC5V digital led strips?

How to choose the right IC for your project?

Which IC is most commonly used?

How do I know my IC type?

How do I know if my IC is good or bad?

How many types of IC are there?

How to wire addressable led strips?

 

Color, color temperature, and CRI

The Color Difference Between Warm White 2700K, 3000K, 4000K, 6000K Pure White and 7000K Cool White

1. What is color temperature?

2. What color temperature is right for me?

• 2700K VS 3000K

• How obvious is the difference between 2700K and 3000K?

• Warm White 3000K VS Natural White 4000K VS Daylight White 6000K

• Warm White VS Cool White

3. Enjoy 2700K, 4000K, 6000K

4. Further Reading: How to install Warm White LED light strip?

How to choose the right color for your led strip lights? -

1. How many colors are in LED strip lights? 

2. What do LED light colors mean?

3. Why do white LED light turns to yellow? 

4. Why are your led strip lights not the same color?

5. What is the most relaxing color for LED lights? 

6. What color led lights is best for sleeping?

7. Are led lights bad for your eyes? 

8. Is cool white or warm white better for eyes?

What is color temperature?

1. What is the best color temperature?

2. Does color temperature keep the same as time goes by?

3. What color temperature is best for night?

4. Led strip lights about color temperature,CCT VS RGBW VS RGBCCT;

What is color rendering in​dex?

1. What is CRI in led lights?

2. How to choose the right CRI when buying led strip lights?

3. What is the relationship between CRI and brightness?

4. Is higher CRI better? High CRI VS Low CRI;

5. How to find CRI value? 

 


Led strip light connection

How to connect led strip lights?

1. How to connect led strip lights together?

2. How to connect LED light strips without connectors?

3. How to solder wires to LED strips?

4. How to connect LED strips without soldering?

5. Which one is better between soldering and using a connector?

6. How to connect mutiple led strip lights?

7. How many LED strip lights can you connect?

How to connect led strip to the power supply?

1. Ensuring the working voltage and power first

2. How to hardwire led strip lights?

3. Can I connect multiple LED strips to the same LED power supply?

How to wire led strip lights?

How to wire single color led strip lights?

How to wire tunable white/CCT led strip lights?

How to wire RGB color changing led strip lights?

How to wire RGBW led strips?

How to wire RGBCCT led strip lights?

How to wire addressable led strips?

 


Controller for led strip lights

How to choose led strip light controllers?

1. WIFI controller

2. RF controller

3. IR controller

4. Bluetooth controller

5. Remote control and panel control

6. Single color controller and multi-color controller

7. DMX512 controller

8. SPI controller

9. DALI controller

10. 0/1-10V dimmer

11. Triac series

12. Sonsor series

 


Led power supply

How to calculate power for led strip lights?

4 steps to calculate the power you need

Performance And Reasons Of LED Voltage Drop

How to choose led strip light power supply?

1. Alternating current power supply VS Direct current power supply

2. Constant current power supply VS Constant voltage power supply

3. How to choose the best led power supply for your led strip light?

 


Led strip light installlation

How to install led strip lights? What accessories will be needed?

1. Adhesive installation for IP20 and IP65 led strip lights

2. How to choose the right led tape?

3. Can IP20 and IP65 led strip lights use aluminum profiles?

4. How to use aluminum profiles?

5. Mounted clip installation for IP67 and IP68 light strips

How to install LED sensor stair lights?

Lighting Up Your Stairs With LED Strip Lights Ideas

How to install led strip lights on TV?

How to install led strip lights outdoor?

 


Accessories

How to choose led strip light connectors?

1. Are all LED light strip connectors the same?

2. How do LED strip lights connectors work?

3. What connectors do you need for LED strip lights?

4.  What are the different kinds of LED connectors?

5. How to choose the right connector for your led strip lights?

Ultimate Guide on Aluminum Profile for LED Strip Lighting

1. What are aluminium profiles used for?

2. Why choose aluminum profiles?

3. Different types of LED aluminum profiles

4. LED aluminum profile VS COB LED strips

5. How to install LED aluminum channels?

6. How To Get Ideal Light Diffuser For Your LED Strip?

7. Add Black Aluminum LED Light Diffusers For Your Home Lighting

8. How To Find The Right Aluminum LED Light Strip Diffuser Channel?

 

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