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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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Silicone Sealing Strip for LED Ceiling Lights / LED Luminaire Waterproof Gasket
Yutian manufactures silicone sealing strips for LED ceiling lights and luminaires – waterproof, dustproof, and UV resistant. Custom profiles and sizes. Withstands -60°C to 250°C, ideal for ceiling lights, panel lights, recessed downlights, and outdoor fixtures. Factory direct, OEM/ODM. Wholesale only. Free samples. ISO 9001.
- Made of high-quality, flexible silicone
- Waterproof and dustproof, ideal for LED lights and outdoor use
- Heat resistant from -40℃ to 200℃
- Excellent sealing performance, prevents moisture and dirt intrusion
- Easy to cut, install, and maintain
- Long service life with anti-aging properties
Product Features
Application
| Baby Daily Necessities | State Grid | BS/COM/ESS | Optoelectronics industry |
| mechanical seal | New energy vehicles | Home appliance | Sports equipment |
- Parameters
- Made of high-quality, flexible silicone
- Waterproof and dustproof, ideal for LED lights and outdoor use
- Heat resistant from -40℃ to 200℃
- Excellent sealing performance, prevents moisture and dirt intrusion
- Easy to cut, install, and maintain
- Long service life with anti-aging properties
Product Features
Application
| Baby Daily Necessities | State Grid | BS/COM/ESS | Optoelectronics industry |
| mechanical seal | New energy vehicles | Home appliance | Sports equipment |
Yutian · Factory-direct manufacturer · 18+ years silicone extrusion expertise · 6,800m² · 14+ lines
Semi-Transparent Silicone Sealing Strip for LED Ceiling Lights
Platinum-cured · IP67 waterproof · Translucent for visual inspection · Custom profiles
✓ Ceiling lights · panel lights · downlights✓ Platinum-cured · no odor · no optical contamination✓ Semi-transparent – quick QC visual inspection
Visual inspection – translucent finishNo optical contamination – clean room safeCustom profiles · 3-5 day samplingFree samples with COA
✅ Free samples with COA test report✅ Mass production matches sample – guaranteed✅ 1% daily penalty for delayed delivery✅ Engineer 1-on-1 selection guidance
Three factories · Full industry chain synergy
From silicone compounding to precision extrusion and finishing – three integrated factories ensure complete quality control at every stage. Raw material to finished seal – fully in-house. Scale production, reliable delivery, consistent quality.
🧪
Guilin Yutian
Silicone raw material · source control
⚙️
Dongguan Huahong
Compounding & auxiliaries · cost optimization
🏗️
Dongguan Yutian
Precision extrusion · LED luminaire sealing
Raw materialCompoundingExtrusionFinishing
6,800m² production facility14+ extrusion lines90+ production team10+ tons daily capacityISO 9001 certified
Why lighting manufacturers choose Yutian
Custom profile development
Your drawing, our extrusion die – D, P, rectangular, bulb, or custom. Low-cost tooling.
Fast sampling – 3 to 5 days
3‑5 day samples, 5‑7 day production – significantly faster than industry average.
Platinum-cured excellence
No peroxide residues · no odor · no optical contamination – clean room safe.
Semi-transparent · visual inspection
Translucent finish enables quick QC verification – no guesswork.
Integrated manufacturing
Full control from raw silicone to finished seal – three factories, one chain.
Global certifications
ISO 9001 · RoHS · REACH · UL94 V-0 · FDA/LFGB (optional)
Key advantages
🔬
Platinum-cured – no odor, no optical contamination
Peroxide-free · safe for luminaire optics
Unlike peroxide-cured silicone that leaves residual byproducts (benzene, aldehydes), our platinum-cured semi-transparent silicone sealing strip produces no volatile compounds during curing. This means: no odor – safe for enclosed luminaire environments; no optical contamination – won't fog or stain internal optical components; superior purity – no harmful residues.
→ Pure · odorless · optics-safe
🔍
Semi-transparent – visual inspection enabled
Translucent finish · quick QC verification
The translucent finish is a key quality assurance feature: quick visual verification – confirm seal is properly seated; detect misalignment – spot gaps or shifts instantly; reduce QC time – no need for complex inspection tools; installation confidence – installers can see what they're doing.
→ See the seal · trust the seal
🛡️
Solid non-foam construction – consistent sealing
No water absorption · no dust accumulation
Unlike foam seals that can absorb moisture, compress unevenly, or degrade over time, our solid silicone construction delivers: no water absorption – IP67 rated; consistent compression – uniform sealing pressure; no dust accumulation – clean appearance; long-term stability – no degradation over time.
→ Reliable · consistent · long-lasting
🔄
High rebound & low compression set
>95% rebound ·<5% compression set
After repeated compression cycles – from maintenance access, thermal expansion, or handling – our seals return to their original shape with >95% rebound and <5% compression set. Maintains sealing force over years of service. No leaks, no maintenance.
→ Stays sealed · decade after decade
🌡️
Wide temperature range – -60°C to 250°C
Handles LED heat · extreme cold · harsh conditions
Our high-temperature silicone seal performs reliably across a -60°C to 250°C temperature range. Suitable for: LED luminaires – handles heat from high-power LEDs; outdoor fixtures – withstands freezing winter and scorching summer; industrial lighting – extreme environment applications.
→ Any climate · any environment
💧
IP67 waterproof & dustproof
Tightly conforming · complete protection
Tightly conforming to housing contours, our seals provide IP67-rated protection against: water ingress – temporary immersion (1m depth, 30 minutes); dust ingress – complete protection; moisture – humidity and condensation.
→ Waterproof · dustproof · worry-free
📐
Custom profiles – any shape, any size
D · P · rectangular · bulb · custom
We produce seals in any cross-section – D-shape, P-shape, rectangular, bulb, or custom. Low-cost extrusion dies – no expensive molds. Fast design changes, quick iteration, low tooling cost. Send your drawing – we'll produce the exact profile you need.
→ Your profile · our production
⚡
Fast sampling – 3 to 5 days
Industry-leading speed · rapid iteration
For lighting manufacturers launching new products or responding to urgent customer requirements, speed matters. Our rapid sampling capability delivers custom-profile seals in 3-5 days – significantly faster than the industry average of 2-3 weeks.
→ Fast · responsive · competitive
🏭
Scale production – reliable delivery
6,800m² · 14 lines · 90+ team · 10+ tons/day
With 6,800m² modern facility, 14 extrusion lines, and 90+ production team, we deliver: 10+ tons daily capacity, thousands of tons annual capacity, samples 3-5 days, production 5-7 days. Bulk orders, reliable delivery – no production delays.
→ Scale · capacity · reliability
Platinum-cured vs. peroxide-cured – why platinum wins
| Property | Platinum-Cured (Yutian) | Peroxide-Cured |
|---|---|---|
| Curing byproducts | ✅ None | ❌ Benzene, aldehydes residues |
| Odor | ✅ Odorless | ❌ Noticeable odor |
| Clarity | ✅ Semi-transparent / Transparent | ❌ Cloudy / Yellowish |
| Optical contamination | ✅ None | ❌ May fog or stain optics |
| Biocompatibility | ✅ Excellent (FDA/LFGB available) | ⚠️ Limited |
| Visual inspection | ✅ Yes – translucent | ❌ No – opaque |
| Long-term stability | ✅ Excellent | ⚠️ Moderate |
💡 For LED luminaires: Platinum-cured silicone is the clear choice – no contamination, no odor, no risk to optical components.
Solid silicone vs. foam – reliability comparison
| Property | Solid Silicone (Yutian) | Foam Silicone |
|---|---|---|
| Water absorption | ✅ None – IP67 rated | ❌ High – absorbs moisture |
| Compression consistency | ✅ Uniform – predictable | ⚠️ Varies with density |
| Dust resistance | ✅ Excellent – smooth surface | ❌ Poor – dust accumulates |
| Long-term stability | ✅ Excellent – decades | ❌ Degrades – powdering risk |
| Visual inspection | ✅ Yes – translucent | ❌ No – opaque |
Technical specifications
| Parameter | Standard | Custom |
|---|---|---|
| Material | Platinum-cured silicone (semi-transparent) | |
| Hardness (Shore A) | 40 – 70 A | 20 – 90 A |
| Temperature range | -60°C to 250°C | Extended |
| Tensile strength | ≥7.0 MPa | — |
| Elongation at break | ≥400% | — |
| Rebound rate | ≥95% | — |
| Compression set | <5% | — |
| Waterproof rating | IP67 | IP68 |
| Flame retardancy | — | UL94 V-0 |
| Profile shapes | D / P / Rectangular / Bulb | Any cross-section |
| Color | Semi-transparent | Transparent / Custom |
| Certifications | ISO 9001, RoHS, REACH · FDA/LFGB (optional) | |
Applications – LED luminaires & lighting fixtures
💡
Ceiling lights
Base-to-diffuser sealing · dustproof · light leakage prevention
📐
Panel lights
Light guide plate to frame sealing · optical performance protection
⬇️
Recessed downlights
Fixture to ceiling sealing · air leakage · insect ingress prevention
🌳
Outdoor LED fixtures
Street lights · landscape lights · tunnel lights · IP67
💧
Underground lights
IP67/IP68 waterproof · fully submersible
🔥
Explosion-proof lights
ATEX compatible · hazardous environment protection
Made to your specification
Profile shape – D / P / Rectangular / Bulb / Any cross-section
Hardness – 20-90 Shore A
Color – Semi-transparent / Transparent / Custom
Temperature – Standard -60°C to 250°C or custom
Flame retardancy – UL94 V-0 (optional)
Cutting – Cut-to-length / Die-cut / Punched
Packaging – Coils / Cut-to-length / Bulk packs / Custom
Fast sampling – 3-5 days for custom profiles
Low tooling cost – extrusion dies
Design confidentiality – NDAs available
Case studies – real B2B projects
European ceiling light manufacturer (OEM) – 8 custom profiles for new luminaire line · samples in 4 days · production in 7 days · 50,000m+ annually · 2+ years · zero quality complaints
US panel light manufacturer – semi-transparent seals for visual inspection · platinum-cured translucent seals · QC teams verify installation in seconds · consistent batch quality
Chinese outdoor lighting manufacturer – IP67-rated seals for street light fixtures · UL94 V-0 flame retardancy · 100,000+ units sealed · zero water ingress failures
Australian commercial lighting supplier – replacement seals for existing luminaires · original profile matching · cut-to-length kits · perfect fit · fast turnaround
Certifications & quality
ISO 9001
Quality management
CertifiedRoHS / REACH
Compliant
CertifiedUL94 V-0
Flame retardant
Option⭐ National High‑tech Enterprise | 🏭 Class 8 cleanroom | 🏭 18+ years
🎁 Cooperation benefits
📦
Free samples
Standard sizes free · Sample with COA
🎨
Custom development
Sample in 3‑5 days · low MOQ
⚡
Fast delivery
Stock 5‑7 days · custom 5‑7 days
Customer feedback
“We switched to Yutian's semi-transparent silicone seals for our ceiling light line. The platinum-cured material has zero odor – no complaints from our assembly team. The translucent finish allows our QC team to verify installation in seconds. Consistent quality, batch after batch.”
— Production Manager, European Lighting Manufacturer
“Yutian delivered custom-profile seals for our panel lights in 4 days – incredibly fast. The semi-transparent material is perfect for our QC process. No optical contamination, no odor. A reliable partner for our OEM lighting production.”
— Engineering Manager, US Panel Light Manufacturer
Frequently asked questions – for B2B buyers
What information do you need to produce a custom profile?
We need a drawing (CAD, PDF, or sketch) of the cross-section, or a physical sample. We also need specifications for hardness, color, length, and any special requirements.
What is the lead time for custom profile samples?
3-5 days for samples. Mass production: 5-7 days after sample approval.
Is the semi-transparent seal suitable for visual inspection?
Yes. The translucent finish allows QC teams and installers to quickly verify proper seating, alignment, and compression – reducing inspection time significantly.
What is the difference between platinum-cured and peroxide-cured silicone?
Platinum-cured silicone has no volatile byproducts, no odor, no optical contamination, and maintains clarity. Peroxide-cured silicone leaves residues that can fog or stain internal optical components.
Is the seal waterproof?
Yes – IP67 rated, providing protection against dust and temporary immersion in water. IP68 is available on request.
What is the operating temperature range?
-60°C to 250°C – suitable for LED luminaires, outdoor fixtures, and extreme environment applications.
Does the seal have any odor?
No. Platinum-cured silicone is odorless and non-toxic – safe for enclosed luminaire environments.
Do you offer confidentiality agreements for custom designs?
Yes – NDAs are available. Your proprietary profiles remain your IP.
Can I get a free sample?
Yes – standard sizes free for qualified B2B buyers. Contact us to request a sample for testing.
Need custom semi-transparent silicone sealing strips for your LED luminaire production?
Factory-direct · Wholesale only · Free samples · OEM/ODM · 3-5 day sampling
🎁 First 10 inquiries → free sample + priority tooling📦 Free sample with COA test report
Request a quote →Dongguan Yutian Silicone Rubber Technology Co., Ltd. | Semi-transparent silicone sealing strip for LED ceiling lights manufacturer | Platinum-cured · IP67 · -60°C to 250°C | Custom profiles · Fast sampling | Factory-direct · Wholesale only · ISO 9001
Tel/Whatsapp: +86 18028921514 | Email: salesmanager@yutiansilicone.com
Tel/Whatsapp: +86 18028921514 | Email: salesmanager@yutiansilicone.com
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