Shop for KYDEX® Thermoplastic Sheets and fire-rated KYDEX® 100 Sheet. KYDEX® T Sheet is often used for the orthotics and prosthetics market and provides rigidity, formability, and mar-resistance. KYDEX® Sheet comes in many standard and custom colors. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote.