Description / Abstract: This specification covers rubber tubing for air injection reactor usage and rubber tubing for carrying low pressure air, and which is intended to withstand continuous service temperatures from (-40 to +125) °C. The rubber materials described by this specification are not suitable for the transport of air contaminated with fuel, oil, or other hydrocarbons.

Material Description.

Material Identification.

Rubber Tube Material. Must consists of Ethylene Propylene Diene Monomer (EPDM).

Construction. The tubing shall be constructed of a single extrusion of Ethylene Propylene Diene Monomer (EPDM) rubber. The tubing shall be black.

Dimensions and Tolerances. The recommended standard dimensions and tolerances for this tubing, and metal fittings used for the system,

Tube Marking. The tube shall be legible marked with the following information: Association for Rubber Products Manufacturers (ARPM) identification code and date code. Such marking shall be printed parallel to the axis in block letters not 3 mm high and the open space between the specified markings shall not be 25 mm.

The date code shall consist of six digits: The first two digits shall represent the month (01 through 12) of the year, the next two shall represent the day of the month (01 through 31), and the last two shall be the last two digits of the year.

Symbols. Not applicable.

Applicability. Elastomeric tubing for air injection reactor tubing.