IP68 vs IP27
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP68 and IP27 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 6 vs 2) and liquid protection (level 8 vs 7). IP68 is rated for dust-tight and continuous immersion (manufacturer-specified), while IP27 provides > 12.5 mm — finger and temporary immersion (up to 1 m).
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.
The IP27 classification guarantees protection against solid objects larger than 12.5 mm and protection against the effects of temporary immersion in water. Ingress of water in quantities causing harmful effects shall not be possible.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 2 with second-digit (liquid) level 7.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP68
6 — Dust-Tight
IP27
2 — > 12.5 mm — Finger
Liquid protection (second digit)
IP68
8 — Continuous Immersion (manufacturer-specified)
IP27
7 — Temporary Immersion (up to 1 m)
Dust-tight
IP68
Yes
IP27
No
Water-jet resistant
IP68
Yes
IP27
Yes
Submersible
IP68
Yes
IP27
Yes
Outdoor suitable
IP68
Yes
IP27
Yes
The exact difference (IP68 vs IP27)
Solid protection
IP68
Level 6 — Dust-Tight
IP27
Level 2 — > 12.5 mm — Finger
IP68 provides "Dust-Tight" (level 6), while IP27 provides "> 12.5 mm — Finger" (level 2). IP68 is 4 levels higher.
Liquid protection
IP68
Level 8 — Continuous Immersion (manufacturer-specified)
IP27
Level 7 — Temporary Immersion (up to 1 m)
IP68 handles Specified by manufacturer (Continuous Immersion (manufacturer-specified)), while IP27 handles Hydrostatic ~10 kPa at 1 m (Temporary Immersion (up to 1 m)). IP68 provides 1 level more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP68 offers higher overall protection than IP27. Choose IP68 for harsher environments; IP27 may suffice for milder conditions and can be more cost-effective.