What Types of Sealing Components Are Found in New Energy Vehicles?

 The rapid growth of new energy vehicles (NEVs) has reshaped the requirements for sealing systems. Unlike traditional fuel cars, NEVs rely on electric drive units, battery packs, and advanced cooling systems, all of which demand specialized sealing solutions. So, what sealing components are commonly used in NEVs?

Common Types of Seals
O-Rings

Application: Found in motors, reducers, and cooling pipelines to prevent fluid or gas leakage.

Materials: FKM, VMQ, and EPDM are widely used to withstand high temperatures and electrolyte exposure.

Distributor note: O-rings are high-volume items, ideal for bulk stocking.

Rotary Shaft Seals (Oil Seals)

Application: Motor shafts and gearbox input/output interfaces.

Features: Must endure high rotational speeds and electromagnetic environments.

Distributor note: Premium models often use FKM or PTFE, offering higher margins.

Combination Gaskets

Application: Battery housing and cooling system joints.

Features: Resistant to electrolyte corrosion and compression set.

Distributor note: Frequently customized for OEM clients, strengthening long-term cooperation.

Special Seals

Examples: Battery coolant line seals, electronic control module protection seals.

Materials: EPDM or modified rubbers for low-temperature and chemical resistance.

Key Factors in Material Selection
Temperature Resistance: FKM or PTFE for high heat, VMQ for cold climates.

Fluid Compatibility: Electrolytes and coolants differ from traditional lubricants, requiring tailored materials.

Electrical Insulation: Some seals must ensure electrical safety.

Lightweight and Sustainability: NEVs emphasize eco-friendly and weight-reduced materials.

NQKSF Solutions
As a trusted sealing brand, NQKSF provides rapid delivery of standard parts, covering more than ten thousand specifications of O-rings and oil seals with sufficient inventory to meet urgent needs. Beyond standard supply, NQKSF offers full customization services — from material selection and structural design to production testing — ensuring non-standard seals precisely match operating conditions. With over 30 years of industry expertise, NQKSF empowers distributors and wholesalers to optimize sealing performance, reduce maintenance costs, and enhance equipment reliability.

NQKSF operates a physical manufacturing plant and is recognized as a leader in the sealing industry. With complete model availability and ready stock, its products are exported to more than 80 countries and trusted by global brands. The company hosts a provincial technology innovation center, is certified as a specialized and innovative enterprise, and has been awarded high-tech enterprise status. As a leading company in the regional industrial cluster, NQKSF continues to drive innovation and industry growth.

Sealing components in NEVs — ranging from O-rings to shaft seals and gaskets — are critical for safety and reliability.

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