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PRODUCTS
Specializing in the production of highquality silicone rubber products
PRODUCT
Specializing in the production of highquality silicone rubber products
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Flat-Emitting Surface Side-Lit Silicone Diffuser
Optical-grade platinum cured silicone diffuser featuring a flat-emitting surface and side-lit design. Flexible and bendable, it delivers uniform planar glow without hotspots. Withstands -40°C to +200°C, IP67 waterproof, 10,000h UV resistant. Ideal for architectural lighting, signage, channel letters, and retail displays. Custom profiles available. ISO 9001 certified
- Side-Emitting Design: Ensures uniform side illumination for LED strips.
- High-Quality Silicone: Durable, flexible, and resistant to yellowing and environmental factors.
- Easy Installation: Designed for a snug fit over LED strips, enhancing light diffusion.
- Versatile Applications: Ideal for indoor decor, architectural lighting, and custom LED designs.
Product Features
Application
| Baby Daily Necessities | State Grid | BS/COM/ESS | Optoelectronics industry |
| mechanical seal | New energy vehicles | Home appliance | Sports equipment |
- Parameters
- Side-Emitting Design: Ensures uniform side illumination for LED strips.
- High-Quality Silicone: Durable, flexible, and resistant to yellowing and environmental factors.
- Easy Installation: Designed for a snug fit over LED strips, enhancing light diffusion.
- Versatile Applications: Ideal for indoor decor, architectural lighting, and custom LED designs.
Product Features
Application
| Baby Daily Necessities | State Grid | BS/COM/ESS | Optoelectronics industry |
| mechanical seal | New energy vehicles | Home appliance | Sports equipment |
Yutian · Three factories one chain – from silicone compounding to optical profiles
Flat-Emitting Surface Side-Lit Silicone Diffuser
Planar glow LED profile · Optical-grade · Flexible · IP67 · 10,000h UV resistant
✓ Architectural lighting✓ Signage & channel letters✓ Retail displays
Uniform planar glowFlexible & bendableAnti-yellowingFree samples
Three factories · Full industry chain synergy
Guilin Yutian
Silicone raw material
Dongguan Huahong
Compounding & auxiliaries
Dongguan Yutian
Precision extrusion & profile finishing
Raw materialCompoundingExtrusionProfile finishing
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Why Yutian flat-emitting surface side-lit silicone diffuser
Uniform planar glow – no hotspots, no glare
Side-lit design · flat emission face
This flat-emitting surface side-lit silicone diffuser effectively eliminates visible LED points, producing a soft, uniform glow across a planar face. Unlike rigid plastic diffusers that show individual LED dots, silicone's light-scattering properties blend discrete sources into a seamless beam. Ideal for linear LED lighting systems requiring no visible LED dots.
→ Clean, professional lighting appearanceOptical-grade silicone – high transmission, controlled diffusion
Platinum cured · two-color extrusion available
Engineered with advanced light-diffusing technology, our silicone extrusion for LED lighting achieves excellent diffusion while maintaining high transmission. The two-color silicone extrusion with milky white top and black base provides controlled scattering – reducing glare while preserving brightness.
→ Brighter, more comfortable illuminationPlatinum cured – no odor, no volatiles
Medical-grade purity · optical clarity
Manufactured using platinum cured silicone – the same high-purity material used in medical applications. Zero peroxide residues, zero odor, zero volatile compounds. Superior optical clarity with no haze from curing byproducts.
→ Pure light, pure materialWide temperature range – -40°C to +200°C
Thermally stable · no warp, no yellow
This high temperature silicone LED profile maintains shape and optical properties in extreme conditions. Unlike acrylic or polycarbonate that warp or yellow under heat, silicone performs reliably in high-temperature LED environments, outdoor summer heat, and freezing winters.
→ Reliable worldwide · any climateUV resistant & anti-yellowing – 10,000+ hours proven
Maintains optical clarity for years
Our UV resistant silicone LED diffuser is formulated with advanced UV-resistant additives. Passes 10,000+ hours UV exposure testing (QUV ASTM G154) with no measurable yellowing. Retains clean appearance indoors, outdoors, or in sun-exposed locations.
→ Long-lasting beauty · less maintenanceFlexible & bendable – curve, shape, route
Bends without cracking
This flexible silicone LED diffuser tube bends effortlessly around curves, signage letters, architectural contours, and furniture edges while maintaining a flat emission face. Supports creative installations that rigid diffusers cannot achieve – from neon-style logos to curved building facades.
→ Design freedom · OEM readyIP67 waterproof – outdoor & landscape ready
Optional waterproof rating
With optional IP67 waterproof rating, this diffuser provides protection against rain, dust, and humidity – critical for facade lighting, landscape illumination, and signage applications. Silicone naturally resists moisture ingress.
→ Outdoor durable · all-weather performanceCustomizable – any shape, any size, any profile
Custom extruded silicone LED profile
Our custom silicone LED diffuser profile is available in flat strip, flat D-shape (270° wide-angle), flat with mounting base (180°), or custom profiles. Width 4-30mm, height 5-25mm, any length. Send your drawing for a free evaluation.
→ Tailored to your projectTechnical specifications & custom range
| Parameter | Standard range | Custom range |
|---|---|---|
| Material | Platinum-cured optical-grade silicone | |
| Light-emitting surface | Flat (planar) | |
| Light direction | Side-lit – perpendicular to LED strip | |
| Emission angle | 120° / 180° / 270° | Custom |
| Light transmission | Up to 94% | Customizable |
| Light uniformity | ≥90% | — |
| Operating temperature | -40°C to +200°C | Extended on request |
| UV resistance | 10,000+ hours (QUV ASTM G154) | — |
| Anti-yellowing | 1–3+ years | Extended formulation |
| Profile width | 4 – 30 mm | Custom |
| Profile height | 5 – 25 mm | Custom |
| Hardness (Shore A) | 40 – 70 | 30 – 80 |
| Length | Up to 50m continuous rolls | Custom |
| Color | Milky white (opal), translucent | Custom colors |
| IP rating (optional) | IP66 / IP67 | IP68 on request |
| Flame retardancy | UL94 V-0 (option) | |
Key features at a glance
💡
Planar glow
Uniform, no hotspots
🔬
Optical-grade
Platinum cured
🌀
Flexible
Bendable, curves
🌡️
-40°C to +200°C
Thermally stable
☀️
10,000h UV
Anti-yellowing
🌊
IP67
Waterproof
📏
Custom
Any shape, any size
🏷️
Two-color
Black + milky white
Typical applications
🏛️
Architectural lighting
Facades, coves, linear grooves
🪧
Channel letter signage
Edge-lit signs, neon-style logos
🛍️
Retail displays
Shelf illumination, showcases
🏨
Hospitality
Hotel lobbies, bars, restaurants
🏠
Interior design
Under-cabinet, skirting, furniture
🌳
Outdoor & landscape
Garden, pathway, contour outlining
🚗
Automotive & marine
Interior accent, cabin lighting
⚙️
OEM & custom fixtures
Specialty lighting projects
Why silicone outperforms plastic diffusers
| Property | Silicone Diffuser | PC/PMMA | PVC |
|---|---|---|---|
| Flexibility | High – bends without cracking | Rigid – cracks under stress | Moderate |
| Temperature resistance | -40°C to +200°C | Up to 80-100°C | Up to 60°C |
| UV resistance | Excellent – 10,000+ hours | Moderate – yellows over time | Poor – rapid yellowing |
| Anti-yellowing | Excellent | Moderate | Poor |
| Durability | 5+ years typical | 1-3 years (outdoor) | 1-2 years |
| Odor / VOCs | None (platinum cured) | May have residual solvents | Strong plastic odor |
Made to your specification
Profile: flat strip, flat D-shape, flat with mounting base
Emission angle: 120° / 180° / 270°
Width 4-30mm · height 5-25mm
Length: rolls or cut-to-size (any length)
Color: opal, translucent, custom colors
Two-color extrusion (black + milky white)
IP67 / IP68 waterproofing optional
UL94 V-0 flame retardant option
Adhesive backing for easy mounting
Low tooling fee for custom profiles
🎁 Cooperation benefits
📦
Free samples
Standard sizes free (shipping cost applies)
Test uniformity & fit
Test uniformity & fit
🎨
Custom development
Sample in 7‑10 days for custom specs
Low MOQ for trials
Low MOQ for trials
⚡
Fast delivery
Stock 5‑7 days · custom 10‑15 days
Expedite available
Expedite available
Certifications & quality
ISO 9001
Quality management
CertifiedRoHS / REACH
Compliant
CertifiedUL94 V-0
Flame retardant
Option⭐ National High‑tech Enterprise | 🏭 Class 8 cleanroom manufacturing
Customer feedback
“Yutian's flat-emitting surface side-lit silicone diffuser gave us exactly the planar glow we needed for our architectural facade project. The 270° wide-angle option provided excellent visibility, and the silicone flexibility made installation around curves effortless.”
— Lighting Designer, UK Architectural Firm
Frequently asked questions
What does 'flat-emitting surface side-lit' mean?
It means the diffuser is configured with LEDs along the side edge (side-lit), with light emitted through a flat, planar light-emitting surface – distinguishing it from curved-emitting surface designs.
What is the difference between flat and curved-emitting surface diffusers?
Both are side-lit, but the emission surface differs. Flat-emitting surface diffusers have a planar emission face, providing a crisp, linear light appearance. Curved-emitting surface diffusers have a rounded face, providing a softer, more diffused glow.
What emission angles are available?
We offer 120° (flat strip), 180° (flat with mounting base), 270° (flat D-shape wide-angle), and custom profiles. Signage typically uses 270° for maximum visibility, while linear edge lighting uses 120°.
Can this flexible silicone diffuser be bent around curves?
Yes. Our flexible silicone LED diffuser tube bends around curves, corners, and contours while maintaining a flat emission face – ideal for curved signage and architectural outlines.
Does the diffuser yellow over time?
No. Our anti-yellowing silicone LED diffuser maintains optical clarity after 10,000+ hours of UV exposure and retains its appearance for 1-3+ years in typical environments.
What is the operating temperature range?
This high temperature silicone LED profile operates reliably from -40°C to +200°C, suitable for cold outdoor environments and high-temperature LED applications.
Is the diffuser waterproof for outdoor use?
Yes. With optional IP67 waterproof rating, the diffuser is ideal for outdoor, facade, and landscape lighting applications.
Can I get custom profile shapes and sizes?
Absolutely. We offer custom silicone LED diffuser profile shapes, custom widths (4-30mm), custom heights, and custom lengths. Send your drawings for a free evaluation.
What is the lead time for custom orders?
Samples for custom specifications: 7-10 days. Mass production: 10-15 days after sample approval.
Is the diffuser flame retardant?
Yes. Our silicone diffuser is available with UL94 V-0 flame retardant rating, ensuring safe performance in commercial and public spaces.
Need flat-emitting surface side-lit silicone diffusers for your lighting project?
Contact Yutian for free samples, optical test reports, and custom profile design – engineered for architectural, signage, and retail lighting.
Request a quote →Dongguan Yutian Silicone Rubber Technology Co., Ltd. | Flat-emitting surface side-lit silicone diffuser manufacturer | Optical-grade · Platinum cured | Flexible · IP67 · Anti-yellowing | Custom profiles 4-30mm | ISO 9001
Tel/Whatsapp: +86 18028921514 | Email: salesmanager@yutiansilicone.com
Tel/Whatsapp: +86 18028921514 | Email: salesmanager@yutiansilicone.com
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INQUIRY
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