Connectors

Polybutylene terephthalate (PBT) is a thermoplastic polyester whose physical properties are ideal for use in electrical fuel injector connectors. PBT has proven to be a fantastic insulator, is both strong and stiff, and holds up well against the high temperatures found underneath the hood of a car. European car manufacturers, however, are beginning to use recycled polyethylene terephthalate (PET), the same kind of thermoplastic polyester used to make soft drink bottles. The European manufacturers have found "recycled" PET to be as strong, stiff, and temperature-resistant as "virgin" PBT. Both plastics are high flow and warp-resistant, and are ideal for use in electrical connector applications.

Nylon is also used extensively to make electrical connectors. Recent innovations have improved the moisture-resistance of some nylon products, allowing for increased hydrolysis resistance in electrical connectors as required. A new generation of high-flow hydro-resistant PBTs has made great strides in meeting stringent USCAR standards for a wide range of vehicle electrical applications.

Image provided by the Automotive Division of the Society of Plastics Engineers International (SPE), a not-for-profit engineering society.