More than 100 grades for high performance in unlimited applications

With more than 100 formulations available, Crastin® Polybutylene Terepthalate is the resin of choice for cost-effective performance across a wide spectrum of automotive, industrial, and consumer applications.

Designers and engineers for everything from automotive electrification to cosmetics packaging rely on Crastin® for stiffness and toughness, superior electrical insulation, and exceptional surface finishes. It’s also preferred over other materials for its excellent dimensional properties, stability versus moisture and its heat resistance.


Versatile and easy to process

Crastin®  is extremely versatile. It’s available in FDA and EU approved grades for food and cosmetics applications.

Crastin® grades are also offered that meet the most stringent electrical insulation standards (EIS) and enables Celanese to offer the industry’s largest portfolio of materials pre-approved by Underwriters Laboratories (UL) and recognized to International Electrotechnical Commission (IEC) standards.

Plus, Crastin® offers manufacturers the advantage of superior flow qualities. It’s easy to process on conventional injection molding equipment. And, we offer a wide range of grades designed specifically for low warpage, hydrolysis resistance, blow molding, and extrusion.

Made globally in three regions, Crastin® is available wherever you are.



Stiffness and high strength icon

Stiffness and high strength

Innovate better mechanical gears, furniture, sporting goods, appliances, and more with the strength and stiffness of Crastin®.

Electrical insulation properties icon

Electrical insulation properties

Crastin® is ideal for electrical and electronic plastics, encapsulation materials, and photovoltaic panels and parts.

Excellent dimensional properties and stability vs. moisture icon

Excellent dimensional properties and stability vs. moisture

With its stability in the presence of moisture, Crastin® is ideal for automotive, appliance, and medical device applications.

Heat resistance icon

Heat resistance

High heat resistance makes Crastin® the resin of choice for applications that require durability in high temperatures.

Easy to process icon

Easy to process

Reduce cycle times for increased cost efficiency, reduce molding machine size due to lower filling pressure, and lower energy consumption during molding with Crastin®.


We’re the R&D partner you’ve always wanted

When you partner with us, you get access to decades of  expertise and ongoing support from our teams of engineers, scientists, and designers. We’re ready to share our know-how and collaborate with you on solutions for your toughest design and manufacturing challenges.

Material Data Center


Auto icon red




Electrical & electronics red icon

Electrical & Electronics



Industrial icon red



Case studies & related content

See how Crastin® materials help manufacturers in multiple industries innovate and stay ahead of the competition.



Proven NHFR Solutions for E&E Devices

Enabling Better Treatment Options Through Better Devices

Translating automotive experience and expertise to e-bike development

Energize E-Bike Innovation and Sustainability with Specialty Polymers

Streamline Bus Bar Overmolding for xEV Batteries with Material-Process-Service Solution

Next-Level Sporting Goods Solutions (NA)

Flame Retardant Solutions - Halogenated Products (NA)

Flame Retardant Solutions - Non-halogenated Products (NA)

Celanese Performance Materials: A broad range of advanced solutions for healthcare components

Materials Solutions for Home Appliances

Get Performance You Can Rely On with  Crastin® SC169 for Drug Delivery Devices, Biopharma Connectors & Surgical Equipment

Optimize Robot Performance with Engineering Polymers

Material Solutions for the Food & Water Industries

Laser Transparent Portfolio Maximizes Design Flexibility in EV Sensors and ADAS

Sustainable Solutions for Robot Vacuum Cleaners

New Ultra-high-flow  Crastin® Makes Cosmetics Packaging More Attractive Than Ever

Celanese Innovative Solutions Support Growing Demand for Durable and Reliable Electric Vehicle Charging Stations & Accessories

Durable solutions for automotive high-resolution camera windshield brackets

Durable, Proven Solutions for Automotive Radar Systems

Celanese Material Solutions for Fuel Cell Systems

Crastin® Product Data Sheets

EV Battery Pack Solutions

Crastin® Literature

Crastin® Hydrolysis-resistant Portfolio Advances Sensors & Electronic Components for E-mobility 

Orange Materials for High Reliability in High-voltage EV and HEV Applications

Optical fiber cable solutions from Celanese 

Innovative Solutions from Celanese for Vehicle Radar Systems

Crastin® Streamlines Manufacturing and Reduces Waste for Luxury Lipstick Cases


How can we help you?