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Black Max® M.R.O.

Black MaxTM M.R.O. Air / Multipurpose Hose

The Black Max® M.R.O. features a fuel line quality that will convey oil, fuel oil, diesel, kerosene and other petroleum derived products, while its tough, black cover resists oils and solvents, as well as weathering, ozone and abrasion. It is tested to have a minimum of 1,000,000 ohms per inch resistance when tested with a 1,000 volt D.C. meggar. Not recommended for a variety of unleaded gasoline.

Technical Overview

Cover Color ■ Black
Oil Resistance ■ High
Construction ■ Non-Conductive
■ Tube: NBR, RMA Class A
■ Cover: NBR/PVC RMA Class A
■ Reinforcement: Spiral polyester yarn
Temperature Range ■ -20°F to +180°F, -29°C to +82°C
Packaging ■ Reels


Thermoid Catalog – Black Max® M.R.O.

Features & Benefits

NBR, RMA Tube – Class A
  • High Oil Resistance
  • Capable of Handling Oil, Fuel Oil,
    Diesel, and Kerosene
  • Ozone Resistant
NBR/PVC, RMA Cover – Class A
  • High Oil Resistance
  • Resists Weathering and Ozone
  • Resists Cracking, Abrasions
4-Spiral Polyester Yarn Reinforcement
  • Provides a Working Pressure to 300 psi
  • More Flexible than Braid Reinforced Hose
  • Easier to Route Assemblies
  • Easier to Coil and Handle
  • Less Susceptible to Premature Failure than Braided Hose if Subjected to Torque
  • Safety Assurance
Pressureless Cure System
  • Minimal Cast (Natural Curvature of the Hose)
  • Extends the Life of the Rubber Compounds
Air Mandrel Manufacturing Process
  • No Internal Contamination of the Inside Diameter Due to the Lubricant
  • Eliminates the Need for Customers
    to Flush the Hose