IP Rating Decoder: The Ultimate Guide to IP54, IP65, IP67, IP68 for B2B Cases
5 Key Takeaways: IP Rating Decoder: The Ultimate Guide to IP54, IP65, IP67, I
- Topic: guide — industry context for B2B buyers and procurement teams
- Date: 2026-08-24 — current standards, certifications and market conditions
- Applications: protective cases for industrial tools, MRO, photography, drones, defense, medical devices, marine, audio
- Procurement: MOQ 500 pieces per Pantone color, 30–45 days lead time after tooling approval, CE/RoHS/REACH/ISO 9001/BSCI
- Shipping: EXW Guangdong (pickup) or FOB Shenzhen / Ningbo (sea freight). 28–35 days to Hamburg / Rotterdam
Direct answer: IP ratings are defined in IEC 60529. First digit = solid particle (0-6), second = water (0-9). For B2B cases: IP54 (entry), IP65 (mid-range), IP67 (most common, 1m/30 min), IP68 (premium, 1.5m+ extended). Kexin Series 0=IP54, 6Series/7Series=IP65, 8Series/9Series/Trolley=IP67/IP68.
First Digit — Solid Particle Protection
| Digit | Protection | Test |
|---|---|---|
| 5 | Dust-protected | Talcum 8h |
| 6 | Dust-tight | Talcum 8h + vacuum |
Second Digit — Water Protection
| Digit | Protection | Test |
|---|---|---|
| 5 | Water jets (6.3mm) | 12.5 L/min, 3 min, 3m |
| 6 | Powerful jets (12.5mm) | 100 L/min, 3 min, 3m |
| 7 | Immersion 1m / 30 min | 30 min submerged |
| 8 | Immersion 1.5m+ extended | Per spec |
Which Rating for Which Application?
| Application | Recommended | Kexin Series |
|---|---|---|
| Office / indoor | IP54 | 0Series |
| Construction / outdoor industrial | IP65 | 6Series, 7Series |
| Marine / boat | IP67 | 8Series, 9Series, Trolley |
| Defense / military | IP67 or IP68 | 8Series IP68 models |
| Submarine / deep-sea | IP68 + pressure-rated | Custom OEM |
| Medical (FDA cleanroom) | IP65 minimum | 6Series ABS |
| Photography / drone (rain) | IP65 or IP67 | 6Series, 8Series |
Kexin Test Methods
- IP54: 6.3mm nozzle, 12.5 L/min, 3 min
- IP65: 12.5mm nozzle, 100 L/min, 3 min from 3m
- IP67: immersion 1m for 30 min
- IP68: immersion 1.5m for 24+ hours (Kexin standard 24h)
Test reports: USD 100 per IP67 report, USD 100 per IP68 report.
Common Misconceptions
IP68 doesn't mean waterproof forever
IP68 is manufacturer-defined for depth/time. Kexin IP68 = 1.5m for 24 hours. Other brands may differ.
Can I upgrade IP after production?
No. IP rating is determined by case design (gasket, latches, drain). Changing gaskets can slightly improve (IP54 → IP65) but major changes need new tooling.
FAQ
Is IP rating the same as waterproof?
No. IP is technical. "Waterproof" is marketing with no standard definition. IP67/IP68 = water-protected to defined limits.
What about IP69K (high-pressure cleaning)?
For 80°C water at 80-100 bar, common in food industry. Kexin offers IP69K-rated cases for food/pharma on request (1,000+ MOQ).
Do I need a higher IP rating than my environment?
Allow margin. If IP65 needed, consider IP67 for accidental drops in water. Cost difference is small, insurance valuable.