An elastomer is a rubberlike polymer material known for its ability to stretch under stress and return to its original shape when the stress is removed.
Elastomers are a broad class of polymer materials valued in commercial and industrial electrical and electronic applications for their flexibility, resilience, and durability. Unlike rigid plastics, elastomers exhibit elastic behavior over a wide range of temperatures and mechanical conditions. This makes them especially useful in environments where materials must tolerate repeated movement, vibration, or mechanical stress without cracking or permanently deforming.
In wire and cable manufacturing, elastomers are commonly used in insulation and jacketing compounds where flexibility and environmental resistance are critical performance attributes. These materials can be formulated to resist oils, chemicals, moisture, ozone, and temperature extremes, depending on the specific elastomer chemistry. Their ability to maintain physical integrity under demanding operating conditions makes them a reliable choice for many industrial signal and power transmission applications.
Elastomers also provide inherent damping properties, helping absorb mechanical energy rather than transmitting it. This characteristic can contribute to improved longevity of electronic assemblies and signal pathways in systems exposed to vibration or dynamic loads. In addition, many elastomer compounds offer good electrical insulation properties, supporting consistent performance in low voltage and control signal environments.
From a materials science perspective, elastomers differ from thermoplastics and thermosets in how their molecular chains respond to force. Their long, flexible polymer chains are lightly cross-linked, allowing them to stretch and recover repeatedly without structural failure. This balance of elasticity and strength is what defines elastomers as a distinct and valuable material category.
Often referred to as rubber or rubber compound in informal or legacy documentation.
Elastomer materials used in electrical products are commonly evaluated by organizations such as UL and ASTM, depending on application and performance requirements.
The development of elastomers accelerated in the twentieth century alongside advances in polymer chemistry. Early natural rubbers were gradually supplemented and, in many cases, replaced by synthetic elastomers engineered to deliver consistent performance across industrial operating conditions. These advancements expanded the use of elastomers beyond mechanical products into electrical and electronic applications.