Polystyrene elbows are made of pre-formed polystyrene insulation and are designed to fit various pipe sizes. Polystyrene is a closed-cell, rigid foam insulation that can withstand a range of temperatures and act as a noise reducer. Polystyrene elbows are designed to provide an added layer of protection and insulation. They can be fabricated as Long Radius (LR), Short Radius (SR), or Socket Weld (SW) in 90 and 45 degree angles. View our selection by elbow type below!