IP67 vs IP68 Technical Comparison Table
| Feature | IP67 Rating | IP68 Rating |
|---|---|---|
| Solid Protection (6) | Dust-tight (No ingress) | Dust-tight (No ingress) |
| Liquid Protection (7/8) | Temporary Immersion | Continuous Immersion |
| Max Depth | Up to 1 Meter | 1.5 Meters+ (Customizable) |
| Test Duration | 30 Minutes | Continuous (usually 24hrs+) |
| Typical Use Case | General Industrial IO | Submersible Pumps / Marine |
Decoding the Ratings: IP67 vs IP68 in Automation
1. The Limitations of IP67 in Heavy-Washdown Areas
In standard automation environments, an IP67-rated Connector provides excellent protection against dust and occasional splashes. However, “temporary immersion” means that if a connector is located in a pit where water collects for hours, the seals may eventually fail due to pressure differentials. For high-pressure washdown environments (common in food and beverage), even IP67 may struggle, leading many engineers to opt for IP68 or even IP69K.
2. Why IP68 is Critical for Long-Term Submersion
The IP68 rating is not a “one size fits all” standard. Unlike IP67, the manufacturer must specify the depth and duration. At Longkai Electronics, our IP68-rated Industrial Cable assemblies are designed with over-molded technology to ensure that moisture cannot track through the cable jacket. This makes them ideal for sensors in wastewater treatment or outdoor surveillance systems where humidity and rain are constant factors.
3. Mechanical Integrity and Material Choice
Comparing IP67 vs IP68 also involves looking at the housing materials. To maintain an IP68 seal under pressure, Longkai uses high-grade TPU or PVC jackets combined with nickel-plated brass or stainless steel coupling nuts. Our Cable Assembly process includes 100% vacuum leak testing to ensure the integrity of the O-rings and internal potting.
Industrial Applications: Matching the Rating to the Environment
Choosing the right M12 / M16 / M8 Connectors involves assessing the specific environmental risks:
- Robotic Arms: Generally require IP67, focusing more on high-flex life than deep submersion.
- Machine Vision: Often uses Industrial USB or Type-C with IP67 locking shells to prevent data dropout from splashes.
- Outdoor Infrastructure: IP68 is mandatory to withstand heavy rain and snow buildup over years of operation.
- Marine Sensors: Specifically require IP68 with salt-spray resistant coatings, a standard feature in Longkai’s Industrial Cable series.
Manufacturing Excellence at Longkai Electronics
With over 12 years of expertise, Dongguan Longkai Electronics Co., Ltd. produces high-performance interconnects in our 3,000㎡ modernized factory. We understand that in automation, a single failed seal can lead to thousands of dollars in downtime.
- Rigorous Testing: We perform 48-hour salt spray tests and 10,000+ plug cycle tests on all Servo Series Connectors.
- Certified Reliability: Our facility is ISO9001 and ISO14001 certified, ensuring every Cable Catalog item meets CE, FCC, and RoHS standards.
- Custom Solutions: Whether you need a specific IP67 vs IP68 configuration or a custom Wire Harness, our R&D team provides TDR signal integrity reports for all high-speed designs.
FAQ: IP67 vs IP68 Waterproof Connectors
Q: Is IP68 always better than IP67?A: Technically, yes, as it offers higher water protection. However, IP68 is often more expensive. For dry factory floors, IP67 is the most cost-effective solution.
Q: Can an IP67 M12 connector handle high-pressure steam cleaning?A: No. High-pressure cleaning requires an IP69K rating. IP67 only protects against immersion, not high-pressure jets.
Q: Are Longkai’s M12 connectors compatible with different coding?A: Yes, we provide A, B, D, and X-coding for our M12 / M16 / M8 Connectors to suit power, signal, and Ethernet applications.
Contact Our Engineering Team
Explore our full range of SCSI / HDB Connectors and DP Cable solutions. Visit us on our global platforms:
- Facebook: Longkai Electronics Official
- LinkedIn: Ying Han – Industrial Connectivity Expert
- Alibaba Store: Longkai Electronics Global Sourcing
