IP68 vs IPX8
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP68 and IPX8 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 6 vs 0). IP68 is rated for dust-tight and continuous immersion (manufacturer-specified), while IPX8 provides no protection and continuous immersion (manufacturer-specified).
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.
IPX8 protects against continuous immersion under manufacturer-specified conditions (depth and duration), with solid protection not specified. The standard for submersible consumer electronics.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP68
6 — Dust-Tight
IPX8
0 — No Protection
Liquid protection (second digit)
IP68
8 — Continuous Immersion (manufacturer-specified)
IPX8
8 — Continuous Immersion (manufacturer-specified)
Dust-tight
IP68
Yes
IPX8
No
Water-jet resistant
IP68
Yes
IPX8
Yes
Submersible
IP68
Yes
IPX8
Yes
Outdoor suitable
IP68
Yes
IPX8
Yes
The exact difference (IP68 vs IPX8)
Solid protection
IP68
Level 6 — Dust-Tight
IPX8
Level 0 — No Protection
IP68 provides "Dust-Tight" (level 6), while IPX8 provides "No Protection" (level 0). IP68 is 6 levels higher.
Liquid protection
IP68
Level 8 — Continuous Immersion (manufacturer-specified)
IPX8
Level 8 — Continuous Immersion (manufacturer-specified)
Both IP68 and IPX8 share the same liquid protection: Continuous Immersion (manufacturer-specified).
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP68 offers higher overall protection than IPX8. Choose IP68 for harsher environments; IPX8 may suffice for milder conditions and can be more cost-effective.