scope:

This specification details the requirements of a two part seam sealer. The material is intended for application over Electrocoated (E-coat) substrates and after all paint ovens. The material must be capable of being manually or robotically applied and is intended to seal body joints against water, dust, air intrusion and corrosion. It must provide a tough durable seal without the use of heat to cure. The material cure rate must provide for; no "material transfer" during trim installation and ensure excellent adhesion before the vehicle leaves the plant.

Material Description. The material is a two part sealer consisting of a 1:1 mixture of a resin component (9984563) and an accelerator component (9984564). Each component, as well as the mixed material (9984562), must be smooth and homogeneous, free of air, lumps and unmixed particles or foreign materials.

The material must be capable of being applied with approved and validated production displacement pumping and two part dispense application equipment.

It must not have a noxious or toxic odor in either the uncured or cured state.

In addition, the material must not adversely affect the personnel handling it.

The material must adhere to all GM globally approved E-coated metal substrates.

Symbols. Not applicable.

Applicability. This material is typically applied to E-coated metal. It is not designed to be baked, it is designed for ambient cure only.

Remarks. Not applicable.