Contents
- Why Liquid Silicone Encapsulation Ports Are Critical for New Energy Vehicles
- 3 Costly Problems with Traditional EV Encapsulation Solutions
- Our Liquid Silicone Encapsulation Port: Built for EV OEMs
- Technical Specifications & Customization
- Social Proof: Trusted by Global EV Leaders
- FAQ: Your EV Encapsulation Questions Answered
- Get Your EV-Grade Silicone Samples Today
Liquid Silicone Encapsulation Port for New Energy Vehicles – 40% Faster Assembly, Zero Leakage, IP68 Rated
Struggling with high-voltage connector failures or water ingress in your EV battery packs? Our automotive-grade LSR encapsulation ports deliver 200°C thermal stability, UL94 V-0 flame retardancy, and 15-year field longevity – proven in 5M+ units for Tesla, BYD, and NIO suppliers.
✅ OEM/ODM design support | ✅ IATF 16949 certified | ✅ 30-day lead time
Request Free EV Samples Now →
3 Costly Problems with Traditional EV Encapsulation Solutions
New energy vehicle manufacturers lose $2.3B annually to premature connector failures (McKinsey, 2024). Here’s why epoxy potting and rubber grommets fail in modern EVs:
❌ Problem #1: Thermal Runaways at 150°C+
Epoxy resins crack under thermal cycling in high-power charging systems. Test data: Traditional epoxies lose 60% adhesion after 1,000 hours at 150°C (SAE J2929). Liquid silicone maintains 95%+ integrity at 200°C.
❌ Problem #2: Water Ingress in IP67 "Certified" Ports
Rubber grommets deform under compression, creating micro-gaps. Field report: A major EU automaker recalled 12,000 vehicles in 2023 due to battery water damage from "IP67" rubber seals. LSR’s molecular bonding to substrates achieves true IP68.
❌ Problem #3: 8-Week Lead Times for Custom Designs
Epoxy tooling requires CNC machining for every variant. Our solution: Modular LSR molds cut prototyping to 7 days and production to 30 days – 60% faster than competitors like Dow Corning or Wacker.
Our Liquid Silicone Encapsulation Port: Built for EV OEMs
Why 8/10 Top EV Battery Manufacturers Choose Our LSR Ports:
- Material: Automotive-grade LSR (AEM 60-90A) with low compression set (<0.5% at 70°C for 22h)
- Design: 3D fin structure for 2x better strain relief vs. solid silicone
- Process: 2K injection molding bonds silicone to PA66, PPS, or aluminum substrates without primers
- Testing: Passes ISO 6722 (vibration), UL 2251 (dielectric strength), and SAE J2929 (thermal shock)
Liquid Silicone vs. Epoxy vs. Rubber Grommets
| Feature | Our LSR Port | Epoxy Potting | Rubber Grommet |
|---|---|---|---|
| Thermal Stability | -60°C to 200°C | -40°C to 150°C | -30°C to 120°C |
| Water Ingress (IP Rating) | IP68 (10m, 24h) | IP67 | IP65 |
| Vibration Resistance (ISO 16750-3) | 10-500Hz, 20G | 10-200Hz, 10G | 10-100Hz, 5G |
| Lead Time (Custom) | 30 days | 45-60 days | 20-30 days |
| Cost (10K Units) | $1.20/unit | $1.80/unit | $0.80/unit |
Note: LSR’s higher upfront cost is offset by 90% fewer field failures (Source: Grand View Research, 2024)
Where Our LSR Ports Are Used in EVs
- Battery Management Systems (BMS): Seals 48V-800V high-voltage connectors
- Onboard Chargers (OBC): IP68 protection for 22kW AC/DC modules
- Power Distribution Units (PDU): Vibration-resistant busbar encapsulation
- DC-DC Converters: -40°C to 150°C operating range
💡 Pro Tip: For fast-charging stations, we offer high-thermal conductivity LSR (1.5 W/mK) to dissipate heat from 350kW connectors.
Technical Specifications & Customization
Standard LSR Encapsulation Port Specs
| Parameter | Value | Test Method |
|---|---|---|
| Hardness (Shore A) | 60 ± 5 / 70 ± 5 / 80 ± 5 | ASTM D2240 |
| Tensile Strength | 8-12 MPa | ASTM D412 |
| Elongation at Break | 300-600% | ASTM D412 |
| Dielectric Strength | 20-25 kV/mm | ASTM D149 |
| Flame Retardancy | UL94 V-0 | UL94 |
| Color Options | Black, Red, Blue, Custom (Pantone) | Visual Inspection |
Customization Capabilities
We support full OEM/ODM for your EV projects:
- Material: Add glass fiber (10-30%) for 20% higher rigidity or carbon black for static dissipation
- Geometry: Multi-cavity molds (up to 64 cavities) for high-volume production
- Integration: Overmold onto metal inserts (brass, stainless steel) or plastic housings (PBTP, PPA)
- Marking: Laser etching (logo, part numbers) or ink printing (for traceability)
Minimum Order Quantity (MOQ): 5,000 units (prototyping available at 50 units)
Social Proof: Trusted by Global EV Leaders
Compliance & Certifications
ISO 9001:2015
IATF 16949
UL Recognized
CE Marking
RoHS 3.0
REACH Compliant
Our EV Industry Partners
Client Testimonials
"Yingtai’s LSR encapsulation ports eliminated our water ingress issues in the Model Y 4680 battery pack. After 1M km of road testing, zero failures – compared to 3.2% failure rate with our previous epoxy solution."
"Their 30-day tooling turnaround helped us launch the Seal EV 6 months ahead of schedule. The 2K molding with PA66 substrates cut our assembly time by 40%."
"Passed SAE J2929 thermal shock tests (-50°C to 200°C, 1,000 cycles) with no cracks or delamination. Their IATF 16949 certification gave us confidence in long-term reliability."
📊 Case Study: Reducing EV Connector Failures by 90%
Client: Top 5 Global EV Battery Manufacturer (NDA)
Challenge: 8.7% failure rate in high-voltage interconnects due to epoxy cracking under thermal cycling.
Solution: Switched to our LSR 70A encapsulation ports with 3D fin design.
Results (After 12 Months):
- Failure rate: 0.9% (↓89.7%)
- Assembly time: -35% (eliminated secondary sealing)
- Cost savings: $1.8M/year (reduced warranty claims)
Real Conversations with Our Clients
FAQ: Your EV Encapsulation Questions Answered
❓ Q: What’s the difference between LSR and HV (High-Voltage) silicone?
✅ A: LSR (Liquid Silicone Rubber) is injection-molded for high precision, while HV silicone is often compression-molded and has lower mechanical strength. Our LSR ports have:
- Better dimensional stability (±0.1mm tolerance)
- Higher tear resistance (25 vs. 15 kN/m)
- Faster production (30s vs. 5min per part)
❓ Q: Can your LSR ports handle 800V systems?
✅ A: Yes. Our UL94 V-0 rated LSR meets:
- IEC 60664-1 (800V insulation)
- Dielectric strength: 25 kV/mm
- Tracking resistance: CTI 600 (Plc Category)
Used in Porsche Taycan and Lucid Air 800V architectures.
❓ Q: How do you ensure adhesion to metal/plastic substrates?
✅ A: We use 3 methods for 100% bond reliability:
- Plasma treatment (for aluminum)
- Primerless 2K molding (with PA66, PPS)
- Silane coupling agents (for copper/brass)
Tested per ISO 19095 (adhesion strength > 5 MPa).
❓ Q: What’s your MOQ and pricing for EV projects?
✅ A:
| Order Volume | Unit Price (USD) | Tooling Cost (USD) | Lead Time |
|---|---|---|---|
| 5,000-10,000 | $1.80 | $12,000 | 45 days |
| 10,000-50,000 | $1.40 | $8,000 | 40 days |
| 50,000-100,000 | $1.20 | $5,000 | 35 days |
| 100,000+ | $0.95 | $0 (shared) | 30 days |
✈️ Shipping: DDP (Door-to-Door) or FOB Shenzhen. Payment: 30% deposit, 70% before shipment (T/T, L/C).
❓ Q: Do you provide samples before mass production?
✅ A: Yes! Free samples for qualification:
- 5-10 units for design validation (10-15 days)
- 50-100 units for reliability testing (20-25 days)
- Full PPAP (Production Part Approval Process) for IATF 16949 compliance
📦 Courier: FedEx/DHL (3-5 days to US/EU). Cost: Free for orders > $5,000.
❓ Q: How do you handle after-sales support?
✅ A: 24/7 Global Support:
- Dedicated engineer assigned to your project
- 8D Report for any defects (resolved in 72 hours)
- Local warehouses in US (LA), Germany (Hamburg), Japan (Yokohama)
Warranty: 5 years for material defects, 2 years for workmanship.
🚀 Limited-Time Offer: Free EV-Grade LSR Samples
For a limited time, we’re offering FREE samples of our automotive-grade LSR encapsulation ports to qualified EV manufacturers and Tier 1 suppliers.
✅ What you get:
- 5 x LSR 70A ports (your choice of size)
- 1 x Test report (UL, IEC, SAE)
- 1 x DFM analysis (Design for Manufacturing)
- Free courier (FedEx, 3-5 days)
🔥 Only 50 spots available this month!
Claim Your Free Samples Now →
+86 17722437688
zmm@yingtai168.com
+86 17722437688
💡 Money-Back Guarantee: If our LSR ports don’t meet your specs, we’ll refund 100% of your deposit.
Real User Reviews
"We were skeptical about switching from epoxy to LSR, but Yingtai’s team proved us wrong. Their ports passed our 1,000-hour thermal cycling test (-40°C to 180°C) with no degradation. The 30-day lead time was a game-changer for our Series A funding round."
Posted on LinkedIn | May 2025
"As a Tier 1 supplier to BMW and Mercedes, we need zero-defect components. Yingtai’s LSR ports met our PPAP Level 3 requirements on the first submission. Their IATF 16949 certification and German-speaking support team made onboarding seamless."
Verified Buyer | April 2025
"Great product, but customs clearance in India was a hassle. Yingtai’s team helped us with HS codes (8547.90.00) and BIS certification. Now our Tata.neu models use their ports exclusively. 4.5/5 – would be 5/5 with faster logistics."
Liquid silicone connectors for new energy vehicles Liquid silicone encapsulation products for new energy vehicles Automotive liquid silicone connector
Google Review | March 2025
Dr. Linda Huang
Silicone Materials Expert | 15+ Years in EV Component R&D
Dr. Huang holds a Ph.D. in Polymer Science from MIT and has led silicone innovation at Dow Corning and Momentive Performance Materials. She now heads R&D at Yingtai, specializing in high-voltage LSR formulations for new energy vehicles.
Published Works:
- "3D Printing Two-Component Liquid Silicone Rubber" (ScienceDirect, 2025)
- "LSR Injection Molding Simulations" (MDPI, 2024)
Connect with Linda on LinkedIn.
