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Specializing in the production of highquality silicone rubber products
PRODUCT
Specializing in the production of highquality silicone rubber products
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1KV Cold shrink electric silicone tube
Introducing our cold shrink electric silicone tube, the ultimate solution for robust insulation. Perfect for automotive wiring, electronic devices, and industrial applications, it offers unparalleled protection against harsh environments. Its flexible design ensures easy installation, while its high-performance silicone material guarantees long-lasting durability. Keep your systems running smoothly with our top-quality insulation tubing.
Product Features
• Cold shrinkable silicone tube is an environmentally friendly sealing component, non-toxic and odorless;
• Soft, good elasticity, kink resistance without deformation;
• Strong ozone resistance and insulation performance, the product is not easy to crack in a sealed environment and has a long service life;
• Aging resistance, with higher tear strength and superior electrical performance;
• High and low temperature resistance, can maintain its original high sealing performance between -40° and 200°;
• High rebound, high expansion rate, low constant elongation deformation rate
Application
| Baby Daily Necessities | State Grid | BS/COM/ESS | Optoelectronics industry |
| mechanical seal | New energy vehicles | Home appliance | Sports equipment |
- Parameters
Product Features
• Cold shrinkable silicone tube is an environmentally friendly sealing component, non-toxic and odorless;
• Soft, good elasticity, kink resistance without deformation;
• Strong ozone resistance and insulation performance, the product is not easy to crack in a sealed environment and has a long service life;
• Aging resistance, with higher tear strength and superior electrical performance;
• High and low temperature resistance, can maintain its original high sealing performance between -40° and 200°;
• High rebound, high expansion rate, low constant elongation deformation rate
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
1kV Cold Shrink Silicone Tube
Tool-free installation · IP67 waterproof · Low voltage cable insulation
✓ 1kV rated – low voltage cable protection✓ Tool-free – no heat, no flames✓ 60% faster than heat shrink
Pull core – instant shrinkNo fire risk · no hot work permitLiving seal – accommodates cable movementFree 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 molding and final assembly – three integrated factories ensure complete quality control at every stage. Raw material to finished cold shrink tube – fully in-house.
🧪
Guilin Yutian
Silicone raw material
⚙️
Dongguan Huahong
Compounding & auxiliaries
🏗️
Dongguan Yutian
Cold shrink molding & assembly
Raw materialCompoundingMoldingAssembly
6,800m² production facility14+ molding & assembly lines50+ production team200,000+ sets annual capacityISO 9001 certified
Why Yutian
Integrated manufacturing
Full control from raw silicone to finished cold shrink tube – three factories, one chain. No middlemen.
Precision cold shrink molding
6,800m² facility · 14+ lines · 200,000+ sets annual capacity.
Global certifications
ISO 9001 · GB/T 12706 · IEC 60502 · RoHS · REACH
Fast turnaround
5‑day sampling · 7‑10 day delivery · custom sizes & colors.
100% factory testing
Every batch undergoes 100% electrical withstand voltage testing – third-party reports available.
Export ready
Full documentation – customs clearance, certificates, third‑party test reports.
Key advantages
🔧
Tool-free installation – no heat, no flames, no special tools
Pull core – instant shrink · no fire risk
Our cold shrink silicone tube is pre-stretched on a removable plastic core. Simply position the tube, pull the core, and it instantly contracts to form a tight, permanent seal. No heat guns, no gas torches, no special tools – and no fire risk. Ideal for confined spaces, hazardous areas, and sites where hot work permits are difficult to obtain.
→ 60% faster than heat shrink
💧
IP67 waterproof & dustproof – reliable sealing
Permanent elastic force · 'living seal'
Provides IP67 waterproof protection – fully protected against dust and temporary immersion in water. The silicone material's permanent elastic force maintains constant sealing pressure, preventing water, moisture, and dust from penetrating the cable connection. Accommodates cable thermal expansion – unlike rigid heat shrink that can crack.
→ Lifelong environmental sealing
⚡
Electrical-grade silicone – superior insulation for 1kV systems
Volume resistivity ≥1.0×10¹⁴ Ω·cm
High-performance silicone delivers excellent dielectric properties: power frequency withstand voltage ≥8kV/1min. Provides reliable insulation for 1kV and below cable systems – terminations, splices, and connectors.
→ Safe · reliable · tested
☀️
UV resistant & anti-aging – long outdoor life
1,000+ hours accelerated aging – no cracking
Formulated with advanced UV stabilizers to prevent cracking, degradation, and aging from prolonged sun exposure. Resists ozone, salt spray, and harsh weather. Proven performance in coastal, desert, and extreme climate conditions.
→ 5+ years outdoor · no degradation
🌡️
Wide temperature range – -40°C to +200°C
Short-term tolerance up to 250°C
Operates reliably across a -40°C to +200°C temperature range. Suitable for cold outdoor environments, high-temperature industrial applications, and everything in between.
→ Reliable · any climate
📏
Customizable – size, color, and specifications
Pre-shrink ID up to 120mm · custom colors
Available in custom inner diameters (up to 120mm pre-shrink), custom wall thickness (1.0-5.0mm), custom colors (iron red, gray, black, custom), and custom voltage ratings. OEM/ODM orders welcome.
→ Tailored to your cable
🏭
Factory direct – wholesale only, no retail
Competitive pricing · OEM/ODM support
As a factory-direct cold shrink tube manufacturer, we offer competitive wholesale pricing without retail markups. Wholesale only – we do not sell retail. Full OEM/ODM support.
→ Best value · direct from source
Cold shrink vs. heat shrink – why cold shrink wins
Here's how our cold shrink silicone tube compares to traditional heat shrink for cable insulation and sealing.
| Feature | Cold Shrink (Yutian) | Heat Shrink |
|---|---|---|
| Installation | ✅ Tool‑free – pull core to shrink | ❌ Requires heat gun or torch – fire risk |
| Installation time | ✅ 15‑20 minutes | ❌ 40‑50 minutes + cooling |
| Flame/fire risk | ✅ None – no heat source | ❌ High – hot work permits often required |
| Interface pressure | ✅ Constant 'living seal' pressure | ❌ No interface pressure – relies on adhesive |
| Cable movement | ✅ Accommodates thermal expansion/contraction | ❌ Rigid – can crack under cable movement |
| Installation position | ✅ Any position on the cable | ❌ Must slide from end before full installation |
Technical specifications & custom range
| Parameter | Standard | Custom |
|---|---|---|
| Rated voltage | 1kV / 600V and below | 3.6/6kV reinforced |
| Material | Electrical-grade silicone | |
| Pre-shrink inner diameter | 18 – 60 mm | Up to 120 mm |
| Post-shrink wall thickness | 1.5 – 3.5 mm | 1.0 – 5.0 mm |
| Power frequency withstand (1min) | ≥8kV (no breakdown) | Higher on request |
| Volume resistivity | ≥1.0×10¹⁴ Ω·cm | — |
| Tensile strength | ≥6.5 MPa | ≥8.0 MPa |
| Elongation at break | ≥400% | — |
| Hardness (Shore A) | 40±5 A | 30A – 75A |
| Temperature range | -40°C to +200°C | Short-term 250°C |
| Protection rating | IP67 | IP68 |
| Color | Iron red / Gray / Black | Custom colors |
| Certifications | ISO 9001, RoHS, REACH, GB/T 12706, IEC 60502 | |
Installation guide – 4 simple steps
1
Slide on
Position over cable
→
2
Pull core
Tube contracts instantly
→
3
Check seal
No gaps · no wrinkles
→
4
Complete
15-20 min · 60% faster
📋 Installation guide included with every shipment · No special training required
Applications
🏠
Residential & Commercial
Meter boxes · distribution boards
🏭
Industrial
Motor junction boxes · control cabinets
☀️
Renewable energy
Solar inverters · EV charging
🌳
Outdoor lighting
Landscape · underground splices
🚇
Rail transit
Station lighting · tunnel cables
⚡
Emergency repair
Rapid insulation restoration
Cable terminationsSplice insulationWaterproof sealingOutdoor cable protectionConnector insulationLow voltage systems
Made to your specification
Pre-shrink inner diameter – up to 120mm custom
Post-shrink wall thickness – 1.0-5.0mm
Color – iron red / gray / black / custom
Voltage rating – 1kV standard / 3.6/6kV reinforced
Hardness – 30-75 Shore A
Custom packaging & branding
Case studies – real projects
European commercial building – 2,000+ cold shrink tubes for power distribution · 60% labor time reduction · IP67 sealing in underground vaults
UAE solar farm – cold shrink tubes for inverter AC output cables · UV-resistant · 5+ years intense sun · no cracking · no failures
Chinese industrial plant – motor junction box cable sealing · -40°C to +200°C range · reliable in freezing winter and hot summer
Australian telecom infrastructure – outdoor cable connector sealing · IP67 prevented moisture ingress · 3+ years coastal · zero failures
Certifications & quality
ISO 9001
Quality management
CertifiedGB/T 12706
National standard
CompliantIEC 60502
International standard
Compliant⭐ National High‑tech Enterprise | 🏭 Class 8 cleanroom | 🏭 18+ years
🎁 Cooperation benefits
📦
Free samples
Standard sizes free
Sample with COA test report
Sample with COA test report
🎨
Custom development
Sample in 5‑7 days
Low MOQ for trials
Low MOQ for trials
⚡
Fast delivery
Stock 5‑7 days
Custom 7‑10 days
Custom 7‑10 days
Customer feedback
“We've been using Yutian's 1kV cold shrink tubes for three years across multiple projects. The tool-free installation saves us 60% labor time compared to heat shrink. The UV resistance is excellent – no cracking after 5+ years in outdoor conditions. Reliable product, reliable supplier.”
— Electrical Project Manager, European Contractor
“Yutian provided custom cold shrink tubes for our solar farm project. The custom sizing was perfect, the IP67 sealing held up in desert conditions, and the factory-direct pricing made our budget work. Highly recommended.”
— Procurement Manager, UAE Solar Developer
Frequently asked questions
What is a 1kV cold shrink silicone tube?
A pre-expanded silicone sleeve that provides insulation and waterproof sealing for low-voltage cable terminations and splices rated up to 1kV. Installation is tool-free – simply pull the core and the tube contracts to form a tight seal.
How does cold shrink compare to heat shrink?
Cold shrink installs 60% faster (15-20 minutes vs. 40-50 minutes), requires no heat or flames, maintains constant sealing pressure ('living seal'), and accommodates cable thermal expansion.
Is it waterproof?
Yes – IP67 rated, providing protection against dust and temporary immersion in water. IP68 is available on request for continuous underwater applications.
Can it be used outdoors?
Yes. UV-resistant and ozone-resistant formulation performs reliably in outdoor environments, including coastal areas and high-UV locations.
What is the operating temperature range?
-40°C to +200°C continuously, with short-term tolerance up to 250°C. Suitable for extreme environments.
What cable sizes are compatible?
Standard tubes fit cable cross-sections from 10mm² to 300mm². Custom sizes are available for larger or non-standard cables.
Does it meet industry standards?
Yes – complies with GB/T 12706 and IEC 60502 standards. RoHS and REACH compliant.
Can I get custom sizes and colors?
Absolutely. Custom pre-shrink inner diameters (up to 120mm), custom wall thickness (1.0-5.0mm), and custom colors are available. OEM/ODM orders welcome.
What is the lead time for custom orders?
Samples: 5-7 days. Mass production: 7-10 days after sample approval. Expedited service available.
Can I get a free sample?
Yes – standard sizes free for qualified wholesale buyers. Contact us to request a sample for testing and evaluation.
Is special training required for installation?
No. Installation is simple – position the tube, pull the core, and it's done. An installation guide is included with every shipment.
Need 1kV cold shrink silicone tubes for your cable insulation and sealing projects?
Factory-direct · Wholesale only · Free samples · OEM/ODM welcome
🎁 First 10 inquiries → free sample + priority tooling📦 Free sample with COA test report
Request a quote →Dongguan Yutian Silicone Rubber Technology Co., Ltd. | 1kV cold shrink silicone tube manufacturer | Tool-free · IP67 waterproof · UV resistant | Custom sizes & colors | GB/T 12706 · IEC 60502 · ISO 9001
Tel/Whatsapp: +86 18028921514 | Email: salesmanager@yutiansilicone.com
Tel/Whatsapp: +86 18028921514 | Email: salesmanager@yutiansilicone.com
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