GMW14720

Description / Abstract: GMW14720, 7th Edition, July 2020 - Elastomer for Duct – Air Cleaner

This specification covers the materials and performance of elastomeric hose elbows for duct air cleaner.

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose/Material Description.

Materials covered by this specification are divided into five (5) types.

Type A. Nitrile Acrylonitrile Butadiene Rubber Copolymer (NBR) for +100 °C permanent and +125 °C peak temperatures.

Type B. Ethyl Acrylate Ethylene Copolymer (AEM) for +160 °C permanent and +175 °C peak temperatures.

Type C. Drawing defined (e.g., using SAE J200 or ASTM D2000 line callout).

Type D. AEM for +175 °C permanent and +185 °C peak temperatures.

Type E. AEM with increased dynamic duct properties for Type B and Type D elastomers.

Symbols.

Not applicable.

Applicability.

Elastomeric hose elbows for duct air cleaner.

Remarks.

All GMW14720 AEM types shall have a Minimum of 50% Base Polymer.