Trelleborg HiMod® Slydring® prevents metal-to-metal contact between piston / rod and bore / gland, absorbing transverse loads. Easy to install, the Slydring® demonstrates good compressive strength and good dry-running and wiping performance. Medium to high loads are permissible.--The HiMod® Slydring® is made of a modified polymeric material and is used to prevent metal-to-metal contact in a hydraulic cylinder.