PEEK ball is the abbreviation of high performance engineering thermoplastic PolyEtherEther-Ketone. PEEK 450G (also known as Victrex PEEK 450G) is similar to PPS (polyphenylene sulfide) pepper ball in chemical and water resistance, but it can run at higher temperature. PEEK pepper balls can be used continuously at the temperature of 480 F (250 C) and can be used in hot water or steam without permanently losing physical properties. PEEK ball is a high-strength substitute for fluoropolymer in harsh environment. Victrex 450G PEEK has a flammability rating of V-0, and its smoke and toxic gas emissions are extremely low when exposed to flame.Excellent bearing and sealing materials in harsh environment.