YeloRoll titanium-enriched PVC idler drum prevents build-up on rollers, won’t rust, and runs 55% quieter than steel can rolls. Innoveyor, Inc., Portsmouth, VA25mm (0.984 in) FAG, 6205-C3, PVC = 3.0 x 10-5 in/in/Deg. F HDPE = 12.0 x 10-5 in/in/Deg. F (4.0 x PVC)