Some info on Acetal Plastic

ACETAL is a thermoplastic material and is among the strongest and stiffest of all thermoplastics.  It has excellent tensile strength, thermal properties, hardness and chemical resistance.  The normal short-term temperature use range for Acetal is -40 to 270°F (-40 to 132°C ).  Acetal's properties remain consistent across a wide range of temperature and humidity.  It also has excellent structural memory after being subjected to repeated loading.