... inner part uses good natural rubber, PU, PE and synthetic m rubber lined fire hose:The Shell uses the good quality ... fiber,and the inner part uses good natural rubber, PU, PE and ... line of fire fighting, irrig-ation, and construction... INCHNOMINAL INTERAL DLAMETERACTUAL INTERNAL DLAMETER(M/M)TOLERANCE(M/M)1"2525+2-01.5"4038+2 ...