Technical Data - Chemical Resistance - Wrapped Rubber
 

 
Industrial hoses are manufactured by two methods, extruded or mandrel wrapped.

• Extruded hoses are manufactured on machinery with materials pressure fed through dies for tube, through a machine to install the specific braid and passed again for cover attachment. This method allows for long lengths of hose to be manufactured.

• Wrapped hoses are custom hand made or rigid steel or stainless steel mandrels and designed for low to medium pressures in suction or delivery applications. Pressure and vacuum ratings are achieved by varying the types &/or sizes of cord &/or wire depending on application criteria. Hose lengths are restricted to the mandrel lengths available.

Multiple combinations are available for hose ends:
• Steel cord hose, smooth tube and cover with plies of steel wire cord.
• Softwall hose, smooth tube and cover with plies of synthetic cord.
• Hardwall hose, smooth tube and cover with plies of synthetic cord &/or helix wires of steel or nylon.
• Hardwall hose, smooth tube and corrugated cover with plies of synthetic cord &/or helix wires of steel or nylon.
• Hardwall hose, smooth tube and square corrugated cover with plies of synthetic cord &/or helix wires of steel or nylon.
• Hardwall hose, corrugated tube and cover with helix wires of steel.

The Chemical Resistance Tables for rubber hoses were compiled for use as a guide in selecting the most satisfactory hose tube and cover combination for specific chemical applications. The data included are the best available at the time and is constantly being
reviewed as additional testing information is obtained. It is always advisable to test hoses under actual application conditions whenever possible if.

It is recognised that much of the material contained in these charts must be, to a degree, general in nature. Factors such as the method of compounding, temperature, chemical concentrations, external exposure, etc, can all affect the behaviour of polymers.

It should also be noted that compounds with the same name from a given manufacturer can differ between hoses, as compounds are designed for specific application requirements. Compounds can also differ from manufacturer to manufacturer due to their individual methods of compounding.

Chart: Technical Data - Chemical Resistance - Wrapped Rubber