The 135° Grey Ring Seal Top/ Solvent Bottom 110mm Soil Pipe Offset Bend is generally used for changing the direction of 110mm soil pipe. This product is used as the top bend when forming an offset bend at the top of a soil stack with a 158925 bend used as the bottom bend. The bend has a push-fit socket at 1 end which should always form the upper joint & a solvent socket at the other end which should always be used as the lower joint.