IP68 vs IPX6
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP68 and IPX6 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 6 vs 0) and liquid protection (level 8 vs 6). IP68 is rated for dust-tight and continuous immersion (manufacturer-specified), while IPX6 provides no protection and powerful water jets (12.5 mm nozzle).
IP68 is dust-tight and protects against continuous immersion in water under conditions specified by the manufacturer (typically deeper than 1 meter for prolonged periods). The standard for submersible and marine equipment.
IPX6 resists powerful water jets (12.5 mm nozzle, 100 kPa) with solid protection not specified. Suitable for heavy-rain or hose-exposed equipment where dust sealing is not required.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP68
6 — Dust-Tight
IPX6
0 — No Protection
Liquid protection (second digit)
IP68
8 — Continuous Immersion (manufacturer-specified)
IPX6
6 — Powerful Water Jets (12.5 mm nozzle)
Dust-tight
IP68
Yes
IPX6
No
Water-jet resistant
IP68
Yes
IPX6
Yes
Submersible
IP68
Yes
IPX6
No
Outdoor suitable
IP68
Yes
IPX6
Yes
The exact difference (IP68 vs IPX6)
Solid protection
IP68
Level 6 — Dust-Tight
IPX6
Level 0 — No Protection
IP68 provides "Dust-Tight" (level 6), while IPX6 provides "No Protection" (level 0). IP68 is 6 levels higher.
Liquid protection
IP68
Level 8 — Continuous Immersion (manufacturer-specified)
IPX6
Level 6 — Powerful Water Jets (12.5 mm nozzle)
IP68 handles Specified by manufacturer (Continuous Immersion (manufacturer-specified)), while IPX6 handles 100 kPa (Powerful Water Jets (12.5 mm nozzle)). IP68 provides 2 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP68 offers higher overall protection than IPX6. Choose IP68 for harsher environments; IPX6 may suffice for milder conditions and can be more cost-effective.