The miniature nickel-plated connection heads listed below are for indoor or outdoor non-hazardous locations. They provide some degree of protection from dust, rain, and splashing water. The heads come standard with an O-ring moisture seal where the cap connects to the body, and a rubber grommet where the wire exits the cap. The nickel plating provides good corrosion protection. The 362 series connection heads are available with 1/8& NPT or 1/4& NPT process connections, along with 2-, 3-, or 4-terminal configurations.