Waterproof NTC Temperature Sensors(Overmolded Type)

We now have Superior Waterproof & Reliable Sensing Solutions temperature sensor

Overmolded (injection molded) NTC temperature sensors represent the highest standard in waterproof performance and structural reliability for demanding industrial applications.

By using fully integrated injection molding technology, these sensors form a monolithic, sealed structure that effectively eliminates moisture intrusion, condensation, and mechanical failure—making them the ideal choice for long-term use in wet, humid, submersible, and harsh environments.

1. Fully Sealed One‑Piece Construction

Unlike traditional encapsulated sensors, overmolded ntc temperature sensors are manufactured in a one‑step injection molding process.

The thermistor chip, internal connections, and lead wires are completely embedded in TPE elastomers .

This seamless structure prevents any gaps or weak points where water, oil, or vapor could penetrate.

2. Industry‑Leading Waterproof Performance

Thanks to the fully sealed design, our overmolded ntc sensors achieve outstanding IP68 waterproof ratings:

This products can be suitable for continuous submersion under specified pressure and depth This level of waterproofing ensures stable temperature measurement even in prolonged contact with water, liquids, condensate, or high‑humidity environments.

3. Enhanced Mechanical Strength & Durability Injection‑molded housing provides:

• High tensile strength and bending resistance

• Excellent vibration and impact resistance

• Good resistance to chemicals, oils, and detergents

• Stable performance under wide temperature fluctuations

These properties significantly extend service life and reduce failure rates in automotive, industrial, and outdoor applications.

4. Wide Application Range

Our overmolded ntc temperature sensors are widely used in:

• Automotive systems (engine, battery, HVAC, water pumps)

• Household appliances (water heaters, washing machines, dishwashers)

• Industrial equipment and liquid cooling systems

• New energy battery thermal management

• Outdoor electronics and harsh‑environment instruments

5. Customization Capabilities

We support full customization for overmolded sensors, including:

• Custom probe shape, size, and mounting structure

• Various cable lengths and connector types

• Different resistance values (such as 5kΩ,10kΩ, 50kΩ, 100kΩ)

• Custom B‑value and temperature measurement range

• Material selection for high‑temperature or chemical‑resistant requirements

Conclusion

Overmolded NTC temperature sensors deliver the highest level of waterproof performance available in industrial sensing components.

With fully sealed construction, excellent durability, and high stability, they provide reliable, long‑term temperature detection for the most challenging operating environments.

As a professional manufacturer, POLO Sensor is committed to providing high‑performance overmolded temperature sensors that meet international quality standards and satisfy the most demanding application requirements.