PEEK is a high-temperature thermoplastic, with a high glass transition temperature (143℃) and melting point (334℃), load thermal deformation temperature up to 316℃(30% glass fiber or carbon fiber reinforced), can be durable utilization at 250℃, compared with other high-temperature resistant plastics such as PI, PPS, PTFE, PPO, etc., The upper limit of service temperature exceeds about 50℃.