... ",3",4" W. P:13bar,16bar,20bar,25bar,30bar,40bar Double Jacket Fire Hose:The jacket is interwoven by Terylene silk ... or high strength polyester yarn and Terylene silk, in plain or twill. The inner lining is natural rubber, synthetic ... high pressure proof, excellent abrasion resistance, long using life.The double jackets fire hose which inner lined with TPU has been ...