Flexible Coupling Body Material Elastomeric PVC Length 6 In. For Pipe Size 8 in x 4 In. Inside Dia 8-1/2 in x 4-3/8 In. Max Pressure 4.3 psi Band Material 300 Stainless Steel Resistant To Chemicals Ultraviolet Rays Fungus Growth and Normal Sewer Gases Max Temp 140 Degrees F Standards ASTM C1173