Automotive

01. Outdoor-Induced Material Embrittlement (Ozone & UV Resistance)

Exterior automotive components—such as door seals, wiper blades, and sunroof weatherstrips—must endure prolonged exposure to intense UV radiation and atmospheric ozone. Standard rubber is highly susceptible to discoloration, cracking, or hardening, leading to seal failure, water leakage, and increased wind noise, which significantly compromises vehicle quality and service life.

Sanhao’s high-weatherability EPDM formulations provide exceptional resistance to ozone and UV, ensuring that weatherstrips maintain their original elasticity and color even under long-term solar exposure. Our sealing solutions effectively block rain and noise, keeping the cabin quiet and dry while reducing maintenance costs for brand owners.

02. Engine Compartment Heat & Fluid Exposure (Heat & Fluid Resistance)

Rubber components located near the engine—such as O-rings, boots, and gaskets—often operate in extreme temperatures exceeding 100°C and face frequent contact with engine oil, coolant, or fuel. Poor thermal stability can lead to part deformation and leakage, potentially triggering severe mechanical failure or safety risks.

We provide specialized elastomers with superior heat and oil resistance, including NBR, HNBR, and FKM (Fluoroelastomer), which maintain stable physical properties in high-temperature fluid environments. Sanhao’s precision sealing components prevent fluid leaks in engine and transmission systems, ensuring steady operation of core parts and meeting the stringent safety and reliability standards of the automotive industry.

03. Vibration Transmission & Noise Control (NVH Performance)

Passenger comfort is defined by the control of Noise, Vibration, and Harshness (NVH). If the damping performance of suspension or chassis bushings is insufficient, road vibrations are transmitted directly into the cabin, degrading the driving experience and accelerating damage to precision electronic components.

Sanhao specializes in high-damping vibration isolation technology, offering customized spring rates tailored to specific vehicle models. Our production of suspension bushings, engine mounts, and exhaust hangers effectively filters road shock and mechanical vibration, providing superior absorption and significantly enhancing vehicle quietness and ride comfort.

04. Precision Engineering & Automated Integration (Precision & Integration)

The automotive supply chain is highly automated; any minor dimensional deviation or "flash" can cause automated assembly lines to halt or lead to failed leak tests. Furthermore, complex control buttons or sensor housings often require "rubber-over-plastic" designs; if the bonding is not tight, it can result in peeling or air bubbles.

Sanhao utilizes precision mold development and automated injection molding technology to control product tolerances at the micron level, ensuring seamless integration with automated production lines. Our advanced Overmolding technology enables a powerful bond between rubber and engineering plastics or metals, assisting you in realizing more compact and functional interior components and electronic accessories.

Comprehensive Automotive Applications
We assist partners in developing critical vehicle components across all systems:

• Body & Interior Accessories: Door and sunroof weatherstrips, window glass runs, dashboard anti-vibration pads, and pedal pads.

• Engine & Chassis Systems: Precision O-rings, Boots, Bushings, and oil seals.

• Electronic & Sensor Protection: Wire harness grommets, precision button encapsulation, and waterproof seals for radar and camera modules.

• Custom Trim & Accents: Rubber logo components, trim connectors, and anti-slip mats for storage compartments.

Why Choose Sanhao as Your Automotive Industry Partner?

• Rigorous Quality Systems: From raw material traceability to final product inspection, we maintain comprehensive quality records that satisfy the stability requirements of major automakers.

• Material R&D Excellence: We provide specialized material test reports compliant with IATF 16949 and other relevant industry standards.

• Expert OEM/ODM Support: We assist clients through every stage, from initial prototyping to full-scale mass production, accelerating your product development cycle.