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GMW14147

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GMW14147 6th Edition, September 1, 2016 Requirements for Expanded Elastomeric Body Seals

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Description / Abstract: Introduction

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. This standard covers the requirements of expanded elastomeric rubber seals attached to a solid carrier used in sealing body openings.

Material Description. The bulb or sealing portion of the weatherstrips shall be made from expanded closed-cell ethylene propylene diene monomer (EPDM) rubber. For attachment purposes, weatherstrips require a dense base (carrier). This carrier shall be coextruded with the expanded cellular bulb. The carrier shall incorporate a metal insert if specified on the respective part drawing. The specifications for the dense base and the metal carrier shall be specified on the engineering part drawing or in the math data file.

Weatherstrip assemblies shall consist of continuous extruded sections or sections joined together. These sections shall be joined by either transfer or injection molded corners, or mitered corners securely attached with suitable adhesive. Joint and corner offsets in visible and sealed areas must be less than 0.25 mm.

Coatings. When applied, coatings shall be non-abrasive and uniform in color, finish, and texture. Coatings must meet the requirements of color and gloss as established by GM Appearance Engineering.

Applicability. Typical applications include: sealing profiles in the body area, e.g., on doors, tailgates, and trunk lids.