IP18 vs IPX6
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP18 and IPX6 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 1 vs 0) and liquid protection (level 8 vs 6). IP18 is rated for > 50 mm — back of hand and continuous immersion (manufacturer-specified), while IPX6 provides no protection and powerful water jets (12.5 mm nozzle).
The IP18 classification guarantees protection against solid objects larger than 50 mm and protection against the effects of continuous immersion in water under conditions specified by the manufacturer.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 1 with second-digit (liquid) level 8.
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)
IP18
1 — > 50 mm — Back of Hand
IPX6
0 — No Protection
Liquid protection (second digit)
IP18
8 — Continuous Immersion (manufacturer-specified)
IPX6
6 — Powerful Water Jets (12.5 mm nozzle)
Dust-tight
IP18
No
IPX6
No
Water-jet resistant
IP18
Yes
IPX6
Yes
Submersible
IP18
Yes
IPX6
No
Outdoor suitable
IP18
Yes
IPX6
Yes
The exact difference (IP18 vs IPX6)
Solid protection
IP18
Level 1 — > 50 mm — Back of Hand
IPX6
Level 0 — No Protection
IP18 provides "> 50 mm — Back of Hand" (level 1), while IPX6 provides "No Protection" (level 0). IP18 is 1 level higher.
Liquid protection
IP18
Level 8 — Continuous Immersion (manufacturer-specified)
IPX6
Level 6 — Powerful Water Jets (12.5 mm nozzle)
IP18 handles Specified by manufacturer (Continuous Immersion (manufacturer-specified)), while IPX6 handles 100 kPa (Powerful Water Jets (12.5 mm nozzle)). IP18 provides 2 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP18 offers higher overall protection than IPX6. Choose IP18 for harsher environments; IPX6 may suffice for milder conditions and can be more cost-effective.