Made of industrial-grade liquid silicone rubber through integrated injection molding, it has excellent high and low temperature resistance, aging resistance, waterproof sealing and shock absorption performance, suitable for assembly needs of various core components of new energy vehicles, not easy to deform or crack after long-term use, with stable and reliable performance.
Material
Industrial LSR
Hardness
Shore A 40-70
Temperature
Certifications
Applications
-60°C ~ +220°C
Colors
Black, White, Transparent, Customizable
Our Liquid Silicone Rubber (LSR) High and Low Temperature Resistant Shock Absorbing Waterproof Sealing Parts are engineered specifically to address the extreme operational demands of new energy vehicle (NEV) systems, delivering reliable long-term performance across 100+ application scenarios in battery packs, electric drive units, charging interfaces, and body electronics. As a critical safety and performance component for NEVs, these parts integrate four core functions: temperature resistance, shock absorption, waterproof sealing, and environmental stability, solving common industry pain points such as seal failure under thermal cycling, water ingress in high-pressure car washes, and structural loosening caused by long-term road vibration.
Manufactured via precision injection molding of medical and automotive-grade liquid silicone raw materials, these parts feature a homogeneous molecular structure with no internal defects, ensuring consistent performance even under 1,000+ hours of continuous exposure to harsh under-hood and under-vehicle conditions. Unlike traditional EPDM or thermoplastic elastomer seals, our LSR sealing parts maintain dimensional stability and elasticity across a wide temperature range, eliminating the risk of brittleness, cracking, or permanent deformation that can lead to NEV performance degradation or safety hazards. Each part is custom-molded to match exact vehicle design tolerances, with an optional secondary coating treatment available for enhanced wear resistance and anti-adhesion properties in high-friction application scenarios.
All sealing parts are formulated with 100% pure platinum-catalyzed liquid silicone rubber, free of plasticizers, heavy metals, and volatile organic compounds (VOCs) to comply with global automotive material safety standards.
The parts are optimized for dynamic load and sealing performance required for NEV road and operational conditions:
Our precision LSR injection molding process ensures batch consistency and zero manufacturing defects:
Unlike EPDM seals that lose elasticity below -40°C and experience permanent deformation above 150°C, our LSR parts maintain 95% of their original elasticity and sealing pressure across the full -60°C to 220°C operating range. This makes them ideal for NEV battery packs that experience rapid temperature swings during fast charging, cold-start operations in high-latitude regions, and continuous high-load operation of electric drive units, preventing seal failure that could lead to thermal runaway or battery short circuits.
The unique viscoelastic properties of LSR allow these parts to simultaneously provide long-term compression sealing and dynamic shock absorption, reducing the need for separate sealing and cushioning components in NEV assemblies. When subjected to 100Hz to 2000Hz road vibration common in urban and off-road driving conditions, the parts absorb 40% to 60% of impact energy, protecting sensitive electronic components and preventing seal interface loosening that causes water or dust ingress over time.
With a compression set of ≤10% after 1000 hours of high-temperature compression, these parts retain their original sealing pressure for the full service life of the vehicle, eliminating the need for periodic seal replacement common with lower-performance elastomer products. They also exhibit exceptional resistance to automotive chemicals: immersion in 10% sulfuric acid electrolyte, ethylene glycol coolant, and road salt solutions for 1000 hours results in less than 5% change in hardness and dimensional stability, preventing degradation caused by battery leakage or road contaminant exposure.
Our LSR injection molding process supports manufacturing of complex, multi-functional sealing parts with integrated positioning features, conductive paths, and multi-hardness composite structures, eliminating secondary assembly steps and reducing overall system cost. We can produce parts with thickness ranging from 0.3mm micro gaskets to 50mm large-format cushion seals, matching the exact design requirements of 100+ different NEV models currently on the market.
These LSR sealing parts are widely used across all core NEV systems, with 100+ verified use cases across passenger EVs, commercial electric trucks, and electric off-highway vehicles:
All parts are custom manufactured to customer drawings, with standard reference sizes for common applications:
For non-standard geometries, we provide free design support to optimize seal cross-section and hardness for your specific application requirements.
We implement a full-process quality control system from raw material incoming inspection to finished product delivery, ensuring 100% of parts meet customer specifications and industry standards:
We offer a 5-year quality warranty for all standard parts, with dedicated technical support to assist with installation, performance testing, and custom material formulation development for special application scenarios.
