Our System Plast™ neck guides allow PET containers to flow smoothly in high speed, air conveying applications. Nolu™-SR is a proprietary blend of UHMW and other USDA accepted lubricants. This material allows for a harder, lower friction material that is ideal in these applications. Though designs differ, the material of choice is Nolu-SR. This material is proven to increase throughput, reduce jams and wear longer.