GMW16070

Description / Abstract: GMW16070, 3rd Edition, June 2019 - Sealer, Global, Pumpable, Paintable, Ultralight - Generic Qualification

This specification details the requirements of a paintable, pumpable, ultralight sealer. The material is applied in the Paint Shop after the Electrophoretic Painting Process (E-coat) bake, before primer surfacer, and must be capable of being either manually or robotically applied. The material is intended to seal interior and exterior body joints against water, dust, air intrusion, and corrosion. The material must be compatible with primer surfacer and topcoat systems.

Material Description. The material must be a smooth and homogeneous mixture free of air, lumps, unmixed particles, or foreign materials.

It must be capable of being dispensed with approved and validated production displacement pumping and 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 those personnel handling it.

The material must adhere to all approved production E-coats. It must not have corrosion-causing ingredients.

Symbols. Not applicable.

Applicability. Sealing of interior and exterior (non-Class A) E-coated body joints in the Paint Shop after the E-coat oven but before primer surfacer application.

Remarks. Not applicable.