Description / Abstract: Material Description. Each hose type shall be defined by construction. The designation for the hose is defined as GMW17862 Type Y, where Y defines the construction of the hose per 3.2.1, and Table 1.

Construction Type A. Hoses are defined as consisting of a smoothbore tube of Nitrile Butadiene Rubber (NBR) copolymer compound and a cover of Chlorosulfonated Polyethylene (CSM) or Chlorinated Polyethylene (CM) compound. The hoses and/or hose assemblies are capable of giving satisfactory service at temperatures of -40 °C to the continuous temperature of +125 °C, and +150 °C excursion temperature.

Construction Type B. Hoses are defined as consisting of a single wall of Ethylene Acrylic Copolymer (AEM) compound. The hoses and/or hose assemblies are capable of giving satisfactory service at temperatures of -40 °C to the continuous temperature of+150 °C and +165 °C excursion temperature.

Construction Type C. Hoses are defined as consisting of a smoothbore tube of Ethylene Acrylic Copolymer (AEM) compound and a cover of fluorinated elastomers (FKM) compound. The hoses and/or hose assemblies are capable of giving satisfactory service at temperatures of -40 °C to the outer continuous temperature of +200 °C and +225 °C excursion temperature.

Symbols. Not applicable.

Applicability. Transmission venting hoses for under-the-hood applications.