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LED Silicone Diffuser Manufacturer
For over 30 years, Yutian Silicone has been a trusted manufacturer of LED silicone diffusers and covers for linear lighting systems. Our products are designed to eliminate hotspots, provide soft uniform light, and protect LED strips from dust, moisture, and yellowing.
We offer a complete range: front‑lit and side‑lit diffusers, curved side‑lit profiles, silicone covers for aluminum channels, neon flex strips for signage, and linear extrusion covers for cabinets, wardrobes, and commercial lighting. Every profile is extruded from premium platinum‑cured silicone – UV‑stable, anti‑yellowing, and flexible in extreme temperatures (-40°C to +200°C).
Beyond standard profiles, we support full customization: custom shapes, Pantone colors, and compatible accessories including end caps, mounting clips, and adhesive tape. We also provide free technical advice on LED strip selection (brightness, CCT, CRI) to ensure perfect optical performance.
Even light · no hotspots
Anti‑yellowing · UV stable
Flexible · bendable profiles
Custom shapes & colors
Free sample (stock sizes)
Matching end caps & clips
YUTIAN LED Silicone Diffuser
Yutian Silicone is a true ISO 9001 factory with over 30 years of experience. We specialize in LED silicone diffusers, silicone neon light strips, silicone covers, and matching end caps & clips. All profiles are made from platinum‑cured silicone, offering -40°C to +200°C resistance and 10,000h anti‑yellowing (ΔE＜3). No MOQ for stock sizes, free samples (shipping only). Custom tooling from $50 to $250 (deductible). One‑stop service – raw material to finished accessories, direct from the manufacturer, no middlemen.
Silicone foam tubing
Our foam silicone tubes are made using advanced manufacturing processes, featuring excellent high-temperature resistance and outstanding mechanical flexibility. This lightweight silicone hose is designed to provide efficient thermal and sound insulation, making it an ideal choice for the automotive, machinery, and electronics industries. Customization is available to meet various application needs as required by clients.
High temperature resistant foam silicone tube
High-Temperature Resistant Foam Silicone Tubing
Introducing our high-performance High-Temperature Resistant Foam Silicone Tubing Factory in China, a premium solution engineered to withstand the harshest thermal conditions. Crafted from advanced silicone materials, this tubing combines exceptional heat resistance with unmatched durability and flexibility, making it the ideal choice for a wide range of applications.
Low density silicone foam tube
Introducing our cutting-edge Low-Density Foamed Silicone Tubes, engineered to offer a unique combination of lightweight construction, exceptional flexibility, and unparalleled durability. These tubes are specifically designed for applications where a balance of performance and cost-effectiveness is crucial.
Crafted from high-grade silicone, our Low-Density Foamed Silicone Tubes feature a unique foamed structure that provides exceptional compressibility and resilience.
Flame retardant silicone foam tube
The Flame Retardant Silicone Foam Tube is the ultimate choice for industrial and automotive applications requiring unparalleled safety and durability. Crafted from high-quality silicone foam, this tube boasts exceptional flame retardancy and high-temperature resistance, ensuring it remains reliable even in the toughest conditions. Its lightweight and flexible design makes it easy to install and use in a wide range of systems.
Foamed silicone tube for printer
Experience smoother, more reliable printing with Silicone Foam Tube for Printers. Our silicone foam tube is specifically engineered to enhance print quality and extend the lifespan of your printer. Its durable construction withstands the rigors of continuous use, while its high-performance design ensures efficient ink delivery. Suitable for both inkjet and laser printers, our tubing is a must-have accessory for any serious printer user.
Silicone foam insulation tube
Our Insulation Foam Silicone Tube, a revolutionary product for industrial and automotive applications demanding exceptional thermal insulation. Our silicone tube incorporates foam insulation for maximum heat resistance, making it the go-to solution for hot fluid transfer, engine exhaust systems, and various heat-sensitive equipment. Its flexible design ensures seamless integration into various setups
Technical specifications & profiles
Precise data for LED lighting professionals
| Light transmission (clear) | ≥92% |
|---|---|
| Light transmission (diffused) | ≈65% |
| Water ingress protection | IP66 (resistant to strong water jets) |
| Continuous operating temperature | -40°C to +200°C |
| UV yellowing resistance | 1,000h QUV test, ΔYI < 2 |
| Compatible LED strip width | 4mm – 12mm (most standard strips) |
| Material certifications | RoHS, REACH, FDA (food‑contact grade) |
| Flame rating (optional) | UL94 V‑0 available on request |
Clear silicone sleeves
- Round tube: ID 4–12mm, wall 1–2mm
- D‑shape: flat base for easy mounting, width 6–15mm
- Custom profiles (any cross‑section)
≥92% transparency
Diffused silicone sleeves
- Front‑lit diffuser – eliminates hotspots
- Side‑lit diffuser – for shallow recesses
- Curved side‑lit – for arches & columns
≈65% diffusion, no LED spots
Silicone covers for aluminium profiles
- Snap‑in or slide‑on design
- Matching end caps & clips available
- Standard lengths: 2m / 2.5m (custom any)
IP66 compatible
Neon flex & letter strips
- Popular sizes: 8×12mm, 8×16mm, 10×18mm
- Bend radius: 4× tube outer diameter
- For signage, contours, luminous letters
UV stable & flexible
Customization capabilities
Shapes: Any cross‑section, tolerance ±0.1mm. Provide drawing or sample.
Colors: Transparent, milky white, black, or Pantone‑matched.
Surface finish: Glossy, matte, anti‑static, UV coating.
Accessories: Silicone end caps, stainless steel/plastic clips, 3M tape.
Tooling fee: $50 – $250 (deductible from bulk order).
Testing & compliance
✔ Batch test reports: light transmission, hardness (ASTM D2240)
✔ 1,000h QUV aging test (ASTM G154) – ΔYI < 2
✔ RoHS, REACH, FDA certificates for material safety
✔ IP66 waterproof test video/report available on request
Advantage
30+ years, true manufacturer
ISO 9001 factory with 14 extrusion lines and a 6,800㎡ facility. No middlemen – raw material compounding, extrusion, and accessory production all in‑house.
Platinum‑cured · anti‑yellowing
-40°C to +200°C continuous operation. 10,000h QUV test (ΔE＜3) – no yellowing, no cracking. Ideal for indoor/outdoor LED lighting.
Stock sizes · free sample
No MOQ for standard profiles. Free samples (shipping only). Hundreds of LED diffuser sleeves, neon strips, and covers ready to ship in 2–3 days.
Custom profiles · low tooling
Tooling from $50 to $250 (deductible). Sampling 10–15 days. Match any aluminum channel, any shape – ±0.1mm tolerance.
One‑stop accessories
Supplied with silicone end caps, stainless steel/silicone clips, and double‑sided tape. Complete solution – no need to source from multiple vendors.
RoHS · REACH · FDA
Full material compliance. Batch test reports provided. We are a semi‑finished component manufacturer – focus on extrusion quality, not finished luminaire certification.
Silicone diffuser vs PVC vs PU: a fair comparison
Data‑driven insights for professional LED lighting designers
| Property | Silicone diffuser (platinum‑cured) | PVC diffuser | PU diffuser |
|---|---|---|---|
| Light transmission (clear grade) | ≥92% (stable, no yellowing over time) | Initial ≥85%, but drops rapidly due to yellowing | ≥92% (TPU grade), but yellows faster than silicone |
| Light transmission (diffused grade) | ≈65% (customizable haze) | ≈70% (but uneven, may show spots) | ≈65% (limited formulation options) |
| Temperature range (continuous) | -60°C to +200°C | 0°C to +60°C (hardens below 0°C, softens above 60°C) | -20°C to +80°C |
| Low‑temperature flexibility | Remains flexible down to -60°C, no cracking | Becomes stiff and brittle below -10°C | Flexible down to -20°C, harder below |
| UV / weather resistance | Excellent – 1,000h QUV test, ΔYI＜2 | Poor – yellows and cracks within months outdoors | Moderate – requires UV stabilizers |
| Chemical resistance | Resists acids, alkalis, oils, ozone | Poor – swells in solvents, plasticizer migration | Good against oils, moderate against acids |
| Flexibility & recovery | Excellent; low compression set ≤12% | Limited; permanent deformation under stress | Good; high tear strength |
| Safety & certifications | FDA, RoHS, REACH – odorless, non‑toxic | May contain phthalates; not food‑safe | Generally safer than PVC, but may have odor |
| Typical cost (ID 6×OD 9mm) | Higher – $8–20/m | Low – $1–5/m | Medium – $5–12/m |
When to choose which?
• Choose silicone diffuser – for long‑term outdoor use, extreme temperatures (-40°C to +200°C), UV resistance, food/medical safety, and no yellowing. Best total cost of ownership for professional projects.
• Choose PVC – only for low‑cost, indoor, short‑term applications where temperature stays between 0°C and 60°C. Be aware of yellowing and plasticizer migration.
• Choose PU – when you need higher abrasion resistance than PVC and a moderate budget, but cannot afford silicone. Not recommended for outdoor or high‑temperature use.
• Choose silicone diffuser – for long‑term outdoor use, extreme temperatures (-40°C to +200°C), UV resistance, food/medical safety, and no yellowing. Best total cost of ownership for professional projects.
• Choose PVC – only for low‑cost, indoor, short‑term applications where temperature stays between 0°C and 60°C. Be aware of yellowing and plasticizer migration.
• Choose PU – when you need higher abrasion resistance than PVC and a moderate budget, but cannot afford silicone. Not recommended for outdoor or high‑temperature use.
Customer case: from rough sketches to a 4‑year partnership
How we balanced LED spots and light output through material formulation
First contact – trade show sample
The customer picked up our brochure at a lighting exhibition, ordered a sample of a standard LED silicone diffuser, and placed his first small order. Satisfied with the quality, he decided to develop his own custom profile.
Drawing #1 – dark shadows on both sides
He sent his initial design. The LED channel walls were too thick, blocking light from reaching the edges. The result: dark shadows on both sides. He insisted on keeping his own LED strip, so we had to solve it through the diffuser.
Drawing #2 – LED spots (visible dots)
After thinning the walls, the shadows disappeared – but now LED spots appeared on the surface. The light was too concentrated, showing every single LED chip.
Drawing #3 – weak brightness
We tried increasing diffusion to hide the spots, but the overall light output became too dim. The customer was frustrated – three rounds, three different problems.
The breakthrough – modifying the silicone formulation
Our engineers realized that simply adjusting wall thickness was not enough. The real solution lay in the silicone material itself. We reformulated the compound, adding optimized diffusion additives to increase light scattering while maintaining high transmittance. After multiple trials, we found the perfect balance: no LED spots, no shadows, and full brightness – all while keeping his original LED strip unchanged.
Complete solution – end caps, clips & installation know‑how
We also developed matching end caps and mounting clips for his custom profile – a true one‑stop service. We taught him how to make the silicone diffuser dust‑resistant and how to thread long LED strips into long silicone tubes without damage.
Long‑term partnership – 4 years and still growing
He has been a loyal customer for over four years. He shares real‑world needs from his European clients, and together we co‑develop new products. That’s how we grow – not as a vendor, but as a partner.
LED Silicone Diffuser FAQ
Are you a real manufacturer or just a trading company?
We are a genuine ISO 9001 factory with 30+ years of experience in extruding LED silicone diffusers, silicone covers, and silicone neon light profiles. You can request live production videos, raw material traceability, and no middleman markup. Everything from compounding to extrusion, end caps to clips – is done in‑house.
Do you offer free samples? What about custom tooling?
Yes. For stock LED silicone sleeves, samples are free (you pay shipping). For custom profiles (e.g., special shape for your aluminum track), tooling fee ranges from $50 to $250 – fully deductible from your bulk order. Sampling lead time: 10‑15 days. No hidden costs – you deal directly with the extrusion factory.
What is your MOQ? Can I order small quantities?
For standard stock sizes of our silicone tube for LED strip, there is no MOQ – you can order even 1 meter. For custom extrusions, the minimum order is typically $500 (value‑based, due to extrusion setup). We welcome small trial orders to prove our quality.
Can you supply matching end caps, clips, and adhesive tape?
Absolutely. We provide one‑stop sourcing: silicone end caps, stainless steel / plastic mounting clips, and double‑sided tape for most of our LED silicone diffuser and silicone cover profiles. Custom accessories are also available – no need to search multiple suppliers.
What about yellowing and temperature resistance?
Our platinum‑cured silicone works continuously from -40°C to +200°C. With UV stabilizers and anti‑yellowing additives, our LED silicone diffuser passes 10,000h QUV test (yellowing ΔE＜3). No cracking, no softening under high‑power LEDs – suitable for both indoor and outdoor use.
Can you customize a diffuser for my aluminum profile?
Yes. Send us your aluminum channel drawing or a sample, and we will design a snap‑in or slide‑on silicone cover with tight tolerance (±0.1mm). Low tooling cost ($50‑250), fast sampling (10‑15 days). We have experience matching hundreds of standard aluminum extrusion profiles.
What certifications do your materials have?
Our silicone compounds are RoHS, REACH, and FDA (food‑contact) compliant. We provide material test reports and certificates with every shipment. Note: we are a semi‑finished component manufacturer (we do not produce LED strips), so we do not hold UL for finished luminaires.
How fast is delivery for stock vs custom orders?
Stock sizes (e.g., standard silicone neon light profiles or common LED silicone sleeves) ship within 2‑3 business days. Custom orders: sampling 10‑15 days, mass production 5‑15 days. Real manufacturer, real lead time – no delays from third‑party traders.
What is the difference between front‑lit, side‑lit, and curved profiles?
Front‑lit – LED faces the diffuser directly; brightest and most uniform. Side‑lit – lower profile for shallow recesses (stairs, thin coves). Curved side‑lit – flexible arc for columns and curved walls. Our team can help you choose the right LED silicone diffuser for your project.
Do you provide technical support and installation advice?
Yes. As an experienced manufacturer, we help you select the right profile, clip spacing, adhesive, and even provide video installation guides. We solve real assembly problems – not just sell tubes. One‑stop service from raw material to finished accessory.
“Thank you Yutian for making the greatest and most dependable silicone products maker and supplier
with products that are incredibly strong, remarkably flexible, and simple to use.”
“The reliable silicone tube and nice services are offered by LegenDay, and we appreciate their help.
We also received our purchase quickly and of reliable quality.”
“I’m grateful for LegenDay assistance. LegenDay is a superb silicone tube goods manufacturer.
They helped me with the demands of my silicone tube company. The product has a lot of benefits.”
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One-Stop Silicone Product Solution
As a leading silicone products manufacturer based in China, Yutian offers a diverse range of customized silicone products for various industries. With our state-of-the-art facilities, including 8x40-meter assembly lines, on-site 5S management, and stringent quality control measures, we ensure top-notch production standards.
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