Parflex Mast HoseThe Parflex 53DM Duramax from the Parflex division of Parker Hannifin Corporation meets or exceeds SAE 100R18 with a 3,000 PSI constant working pressure and a smaller outside diameter. Parflex’s Over-The-Sheave hoses, 53DM, 55LT and H6, are constructed with copolyester materials that allow for a -70 F temperature rating while maintaining chemical compatibility with hydraulic fluids, making them a good fit for use in cold storage or refrigerated areas. The H6 is rated as high a 250 F. The strength member, or braid, is offered in high-tensile fibers or high-tensile, brass-plated steel wire and the jacket is produced from a specially formulated material with a high level of UV protection for optimal weather resistance, and low coefficient of friction to improve wear. Sizes range from 3/16 inch up to 1 inch depending on type of hose. Hoses are available in a single, twin or multi-line design. –