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Key Fire Hose Fire Protection 
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  • Nitrile Rubber Covered Hose Black LDH
  • 4", 6", and 8"
Temperature:-5°F to 300°F

Hose Construction

Hose shall be made from 100 percent high tenacity synthetic yarn, circularly woven and completely protected and locked-in by tough highly resistant synthetic nitrile rubber, forming a single homogeneous construction without the use of glues or adhesives of any type.

Lining Properties

Ultimate Tensile Strength: Tensile strength of the lining and cover shall not be less than 1750 PSI.

Ultimate Elongation: 500 percent minimum.

Accelerated Aging Test: The tensile strength and ultimate elongation of the vulcanized rubber compound which has been subjected to the action of oxygen at a pressure of 300 PSI (±10 PSI) and a temperature of 158°(±18°F) for a period of 96 hours shall retain 60 percent of its originally stated properties.

Hydrostatic Pressure Tests

Part # Diameter Service
Burst Pressure Request a Quote
RC40-500 4" 250psi 500psi 750psi Request Quote
RC60-300 6" 150psi 300psi 500psi Request Quote
RC80-300 8" 150psi 300psi 450psi Request Quote

Abrasion Resistance

Hose shall withstand 30,000 cycles on the Taber Abrasion Machine (H-22 Wheel: 1 kg). Key Fire Hose Corporation on request will supply written warranties that SUPER-FLOW hose meets a minimum 30,000 cycles. Other abrasion test results (UL, DIN, etc.) can be supplied on request of purchaser.

Cold Resistance

Hose shall have a capability of use down to -5°F. Hose shall have no apparent damage to cover, reinforcement or lining when subjected to the following cold bending test: a 50 ft. length of dry hose is to be firmly coiled and placed in a cold box at -5°F for a duration of 24 hours. Immediately after removal of the hose from the box, hose should be uncoiled and laid out by one operator. Following this procedure, the hose shall not leak nor show any damage to the reinforcement when subjected to the hydrostatic acceptance test stated above.

Ozone Resistance

Hose shall show no visible signs of cracking to the lining or cover when tested in accordance to ASTM D518 Procedure B, 100pphm/118°F/70 hours.

Chemical Resistance

Exposure to sea water and contamination by most chemical substances, hydrocarbons, oils, alkalis, acids and greases must have no effect on the short or long term performance of the hose. A chemical resistance chart is available and Key Fire Hose will supply specific chemical resistance data on request of purchaser for unique applications.

Heat Resistance

The hose, when subjected to a static pressure of 100 PSI, shall be capable of withstanding a surface temperature of 300°F for a minimum of two minutes without rupture or damage to the synthetic reinforcement.

Hose Weight and Coil Diameters

The hose shall conform to the following average weights and diameters
Part # Diameter Weight
per foot
Coil Size
100’ Lengths
RC40-500 4" .75 lbs. 24"
RC60-300 6" 1.20 lbs. 34"
RC80-300 8" 1.70 lbs. 38"


The color shall be black.
Other colors available upon request.


Hose is designed for Bower Couplings. Special diameters or construction characteristics can be produced on special request.
Contact your JGB Sales Representative.

** Customers are advised that special diameters or construction characteristics can be
produced on special request and you are requested to contact your JGB Sales Representative.