... . 3.Working Pressure: 8bar,10bar,13bar,16bar,20bar Nature Rubber Fire Hose:Its warp is high strength polyester staple/yarn. You ... yarn. And the weft must be high strength polyester filament with low elongation.The jacket should be evenly and firmly woven ... the standard one.Characters of Rubber lining fire hose:The rubber lining is very smooth with excellent flexibility, aging proof, sealing property ...