EMI Seals & Gaskets Technical Support

Ingress Protection
IP Chart

EN 60529 outlines an international classification system for the sealing effectiveness of enclosures of electrical equipment against the intrusion into the equipment of foreign bodies (i.e. tools, dust, fingers) and moisture. This classification system utilizes the letters “IP” (“Ingress Protection”) followed by two or three digits. (A third digit is sometimes used. An “x” is used for one of the digits if there is only one class of protection; i.e. IPX4 which addresses moisture resistance only.)

Degrees of Protection – First Digit

The first digit of the IP code indicates the degree that persons are protected against contact with moving parts (other than smooth rotating shafts, etc.) and the degree that equipment is protected against solid foreign bodies intruding into an enclosure.

Degrees of Protection – Second Digit

The second digit indicates the degree of protection of the equipment inside the enclosure against the harmful entry of various forms of moisture (e.g. dripping, spraying, submersion, etc.)


IP69K is a special designation for devices subjected to high-pressure and temperature wash-downs, such as those found in food processing. Its use identifies protection against hot-steam-jet cleaning per EN 60529 and DIN 40050-9. The rating’s K suffix means the sensor must withstand direct application of extremely high-pressure water jets. Water at a pressure of 100 bar (1,450 psi) blasts the sensor at angles of 0, 30, 60 and 90° for 30 sec at each point (120 sec total time) at a temperature of 80°C. Absolutely no water ingress is permitted in devices that obtain this rating.

See also:
Food & Beverage Industry

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