In today’s advanced electronics applications, adhesives, encapsulants, sealants, and other chemistries can be the “horseshoe nails” of mission-critical electronics systems.
Sealants are generally chosen for their ability to fill gaps, resist relative movement of the substrates, and exclude or contain another material. Sealants are generally lower in strength than adhesives, but have better flexibility. Usually, a sealant must effectively bond to a substrate in order to perform these functions.