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SuperLightingLED
SUPERLIGHTINGLED CO., LTD
Web: www.superlightingled.com
Email: [email protected]
Date: 2026-11-03 | ID: 7283

12x25mm Dome Side Neon Black Silicone Sleeve For 12mm LED Strips

MODEL: FLNLT-YT1225B
Price based on selections below:
$9.98
Select Kit:Neon Tube (Base), Neon Tube + Clips
Select Length:3.28ft (1 meter) (Base), 16.4ft (5 meters), 6.56ft (2 meters)
Select Roll Type:Several Rolls (Base), a Whole Roll without cut (Base)
Type of End Caps:With Hole (Base), No Hole (Base), Half With Hole + Half No Hole (Base)
AvailabilityIn Stock
ConditionBrand New
Technical Specifications

Achieve a sophisticated and modern aesthetic with the 12x25mm Black Silicone LED Strip Diffuser. This side-emitting, dome-shaped sleeve is engineered for lighting professionals and enthusiasts seeking to create custom 'black neon lights'. Unlike pre-made neon rope lights, this high-performance led light strip diffuser allows you to use your own high-output LED strip (up to 12mm wide), giving you complete control over color, brightness, and quality. The unique black silicone body provides a sleek, discreet look when unlit and creates stunning contrast when illuminated. It's the ideal solution for transforming standard linear lighting into a seamless, dot-free neon-style fixture for architectural accents, signage, and high-end installations. Pair it with our high-performance RGB+CCT LED strips for ultimate creative control.

Key Features

Unique Black Body Design

The black silicone housing offers a striking, minimalist appearance when off, blending seamlessly into dark surfaces and providing high-contrast definition when lit.

Side-Emitting Dome Profile

Directs light horizontally from the side of the profile, perfect for architectural outlining, wall grazing, and creating crisp lines of light.

Broad Strip Compatibility

Features a spacious 13.5mm internal channel designed to accommodate a wide range of LED strips with a PCB width of up to 12mm.

Premium, Durable Silicone

Constructed from high-grade, UV-stable silicone that resists yellowing and cracking, with an extreme operating temperature range of -30°C to 200°C.

Technical Highlights

  • High-Contrast Aesthetics: The black neon light effect is highly sought after in modern design. This diffuser provides the perfect canvas, ensuring the focus is on the light output itself, not the fixture.
  • Weatherproof for Outdoor Use: When properly sealed with our compatible LED neon flex light accessories and silicone adhesive, the entire assembly achieves an IP67 rating, making it suitable for outdoor facades, signage, and landscape lighting.

Product Specifications

Parameter Details
Product Model FLNLT-YT1225B
Material High-Grade Black Silicone Rubber
External Dimensions 12mm (Width) x 25mm (Height)
Internal Channel Width 13.5mm
Compatible LED Strip Width ≤12mm PCB
Light Emitting Direction Side Emitting (Side View)
Profile Shape Dome Top
Length 1m (3.28ft), 2m (6.56ft), 5m (16.4ft) or uncut roll up to 50m (164ft)
IP Rating IP67 (with proper sealing)
Operating Temperature -30°C to 200°C (-22°F to 392°F)
UV Resistance Excellent
Color Black (Unlit)
Warranty 1 Year
Weight 300g/m

Application Scenarios

Custom Black Neon Signs Create bold, high-contrast logos, lettering, and business signage. The black body makes the sign disappear against dark backgrounds, making the illuminated message pop with incredible clarity.
Architectural Outline Lighting Define the contours of buildings, rooflines, windows, and structural elements. This is especially effective with our ultra-long LED strips to minimize connections and voltage drop over long runs.
Artistic and Theatrical Installations Use the flexible diffuser to build custom light art, stage set pieces, and immersive environments where the lighting fixture itself is part of the aesthetic.

How to Insert an LED Strip Into This Neon Sleeve

  1. Select a compatible LED strip with a PCB width of 12mm or less. Ensure its voltage and color type match your project requirements.
  2. Cut the silicone sleeve to your desired length. Use a sharp utility knife for a clean, straight cut.
  3. Attach a thin, strong string or guide wire to the end of your LED strip using tape. This will act as a pulling lead.
  4. Feed the string through the silicone sleeve from one end to the other. Gently pull the string, guiding the LED strip into the channel. Keep the strip flat to prevent twisting.
  5. Once the strip is in position, trim any excess. Install end caps, using a neutral silicone adhesive to seal both ends completely for IP67 water resistance.
⚠ Precautions
  • Do not bend the diffuser tighter than its specified minimum bend radius to avoid damaging the silicone or the internal LED strip.
  • Always confirm your LED strip's width before purchase. A strip wider than 12mm will not fit inside the channel.
  • For outdoor or wet location installations, sealing both ends with silicone adhesive is mandatory to maintain the IP67 rating.
  • The LED strip, power supply, controller, and mounting accessories are sold separately.

What's in the Box

  • ✓1 x 12x25mm Black Silicone LED Neon Diffuser (in your selected length)
  • ✓End caps, and mounting clips (optional)

Frequently Asked Questions

Q: What is a 'black neon light'? Is black a neon color?

A:A 'black neon light' refers to the aesthetic created by this diffuser. The housing itself is black, providing a sleek, invisible look when off. When the internal LED strip is on, the light emits from the black body, creating a striking, high-contrast effect. The light color is determined by your LED strip.

Q: What's the difference between this silicone diffuser and a cheaper plexiglass led diffuser strip?

A:Silicone is highly flexible, UV-resistant, and withstands extreme temperatures without cracking or yellowing. Cheaper rigid plastic or plexiglass diffusers are brittle, can't be bent into shapes, and often degrade under sun exposure.

© 2026 SuperLightingLED. All specifications are subject to change without notice.