Goodyear's Spirathane™ PT hose is for the transfer of a variety of dry, bulk, and abrasive materials. It is used in applications where static electrical build-up is common. For powders, plastic pellets, and granular materials. Temperature range : 15 to 150° F Vacuum HG 29 in Construction : Cover : High molecular weight clear PVC, corrugated for flexibility Tube : Spirathane® RMA Class B (Medium - High Oil Resistance) Reinforcement : High density rigid clear Pliovic®, static wire Branding : Non-Branded The working pressure ratings are based on ambient temperature of 70° F and will vary inversely with temperature changes.