This type of durable hose is Nitrite rubber covered hose, and along with high tensile strength polyester reinforcement for maximum durability and flexibility. Ribbed Nitrite rubber cover greatly increases abrasion resistance and provides long service life. Smooth Nitrite rubber liner minimum pressure drop. Hose remains flexible to temperatures as low as -4°F (-20°C) and is resistant to ozone, oxidation, and most chemicals or petroleum products. Polyester and/or Nylon reinforcement, tightly woven, twill weave resists puncture