Sheet Stock Acetal Homopolymer Grade PTFE-Filled Plastic Length 4 ft Plastic Width 12 in Plastic Thickness 0.25 in Brown Plastic Clarity Opaque Tensile Strength 8 000 psi Impact Strength 1.0 ft-lb/in Water Absorption 0.12 Percent Temperature Range 32 Degrees to 185 Degrees F Plastic Hardness Rockwell M79