IP67 vs IP68 Industrial Connector: Which Waterproof Connector Do You Really Need?

In industrial environments, connector failure is not just a technical issue—it can lead to system downtime, equipment damage, and costly maintenance.

When selecting a waterproof industrial connector, two common protection ratings often appear: IP67 and IP68. Many engineers assume that IP68 is always better. However, in real-world applications, the correct choice depends entirely on operating conditions.

This guide explains the real difference between IP67 and IP68, and helps you select the right WEIPU industrial connector for your application.

What Does IP Rating Mean in Industrial Connectors?

The IP code (Ingress Protection) is defined by the IEC 60529 standard. It indicates how well an electrical connector is protected against solids and liquids.

An IP rating consists of two digits:

• First digit: protection against dust and solids
• Second digit: protection against water

For industrial connectors, water protection is the most critical factor.

What is an IP67 Connector?

An IP67 waterproof connector provides strong protection against dust and temporary water immersion.

IP67 Protection Level:

• Fully dust-tight
• Protected against immersion in water up to 1 meter
• Test duration: 30 minutes

Typical Applications:

• Industrial automation systems
• LED stage lighting systems
• Outdoor machinery
• Factory equipment
• Sensor and control systems

WEIPU Example:

WEIPU SF series and SP series circular connectors are commonly used in IP67-level environments where exposure to rain or temporary water contact may occur.

What is an IP68 Connector?

An IP68 connector offers a higher level of water protection, designed for continuous or long-term immersion in water.

However, unlike IP67, the exact test conditions for IP68 are defined by the manufacturer.

IP68 Protection Level:

• Fully dust-tight
• Suitable for continuous water immersion
• Depth and time defined by manufacturer (e.g., 2m, 24h or more)

Typical Applications:

• Marine equipment
• Underwater lighting systems
• Water treatment facilities
• Mining and underground installations
• Renewable energy offshore systems

WEIPU Example:

WEIPU SP series enhanced sealing versions and M23X connectors are designed for demanding IP68 environments requiring long-term waterproof reliability.

IP67 vs IP68: Key Differences

Common Misconception: Is IP68 Always Better?

Many buyers assume that IP68 automatically means higher quality.

This is incorrect.

The truth is:

• IP67 is fully sufficient for most industrial environments
• IP68 is only required for continuous or deep water exposure
• Over-specifying IP68 can increase cost without performance benefit

Choosing the correct rating is about engineering fit, not maximum specification.

How to Choose Between IP67 and IP68?

Use the following engineering decision model:

Choose IP67 if:

• Equipment is exposed to rain or splashing water
• Occasional water immersion may occur
• Indoor/outdoor hybrid environments
• Industrial automation or lighting systems

Choose IP68 if:

• Equipment is permanently or frequently submerged
• Marine or offshore applications
• Underground or water treatment systems
• High-risk moisture environments

WEIPU Industrial Connector Solutions

WEIPU provides a full range of industrial waterproof connectors designed for global applications, including:

• Circular connectors
• Heavy-duty connectors
• Waterproof connectors (IP67/IP68)
• M23 high-performance connectors
• Stage lighting connectors (TYPR series)
• Industrial plug and socket systems

Application Industries:

• Industrial automation
• Stage lighting and audio systems
• Renewable energy (solar & wind)
• Transportation systems
• Heavy machinery
• Marine engineering

Why Choose WEIPU Connectors?

WEIPU connectors are engineered for:

• High sealing performance
• Stable electrical conductivity
• Anti-vibration locking design
• Corrosion-resistant materials
• Long service life in harsh environments

Whether your project requires IP67 or IP68 protection, WEIPU provides reliable connector solutions for industrial-grade performance.

Conclusion

The difference between IP67 and IP68 is not about “better or worse”—it is about application suitability.

• IP67 is ideal for most industrial and outdoor applications
• IP68 is required for continuous or deep-water environments

Choosing correctly ensures system reliability, cost efficiency, and long-term stability.

If you are selecting a waterproof industrial connector for your project, WEIPU offers a complete range of IP67 and IP68 solutions to match your engineering requirements.

Explore WEIPU Waterproof Connector Solutions

• Industrial Circular Connectors
• Waterproof Connector Series (IP67/IP68)
• Heavy Duty Connector Systems
• M23 High-Performance Connectors
• Stage Lighting Connector Solutions