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