DuPont ™ Crastin ® is based on polybutylene terephthalate, or PBT polyester. Suited to a variety of industrial applications, the Crastin ® family is currently available in over 100 different grades, approximately half of which are flame retardant. They feature mechanical and physical properties of stiffness and toughness, heat resistance, friction and wear resistance, excellent surface finishes and good colorability. Crastin ® has electrical insulation characteristics, and high arc-resistant grades are available. Processing is simple, with good flow properties leading to short cycle times using standard injection molding machines. Post-molding operations such as welding, fastening, gluing, printing, painting, hot stamping and laser marking are also easy.
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