The presently disclosed subject matter is directed to an encapsulant for electronic components such as those utilized in AMR technology. The encapsulant comprises a wax, a tackifier, a polymer, a plasticizer, a thixotropic agent, and an antioxidant and is designed to protect electronic components from harsh environments such as those where high levels of humidity or corrosive liquids may be present. For example, the encapsulant exhibits minimal percent weight gain due to moisture vapor when subjected to temperatures ranging from about −40° C. to about 70° C. and relative humidities ranging from 0% to 85% over a period of 200 days.