Sioux Rubber & Urethane's Tuff-Tube seamless spout liner is designed and manufactured for round spouting, with a top holding ring that eliminates the need for elevator bolts to hold it in place. It can be pulled out and rotated to offer a new wear surface and longer life of the same liner. The spout line features permanently lined elbows match up with the spouting liner, with either a butted seam or a tapered leading edge that does not allow conveyed material to force itself under lining. It is sold in standard lengths 10 feet and 20 feet; with spouting diameters from 4 to 18 inches are kept in stock, but larger diameters are available.