ISO 13363:2004

ISO 13363:2004 specifies requirements for three types and two classes of hose. The hoses are intended for use in marine-engine wet-exhaust systems (where the exhaust gases are mixed with the discharge of cooling water). The standard does not apply to outboard-motor/personal water craft. The three types are: type 1: a softwall hose, made of oil-resistant material, with a synthetic-fabric reinforcement; type 2: a hardwall hose, made of oil-resistant material, with a synthetic-fabric reinforcement with an helical wire embedded in it; type 3: a hose or tube (flexible connector), made of oil-resistant material, with or without a reinforcement or cover, intended for use in short lengths in locations where the connector is protected from mechanical damage. The two classes are: class A intended for diesel engines; class B intended for petrol engines, and for diesel engines with a very high exhaust temperature.