GMW16292

Description / Abstract: This specification details the material and performance requirements for weldable, preformed sealers that expand and cure in the Paint Shop Electrocoat (ELPO) oven. These materials are intended to seal body joints from water, dust, and air intrusion. These materials must be capable of being welded through.

Material Description. Weldable, preformed sealers are intended for use between two pieces of oily metal that will be welded through. After application and welding, the material is processed through pretreatment and ELPO baths, and then baked in the ELPO oven. These materials are typically tacky throughout, and may be referred to as "two-side tacky" or "T2." A thin, dry film may be applied to one surface of the tacky, preformed sealer to improve the handling or weldability of the part, and the resulting composite sealer may be referred to as "one-side tacky" or "T1".

Symbols. Not applicable.

Typical Applications. These materials are typically applied manually at the Metal Center, Assembly Plant Body Shop, or at an outside source.

Remarks. These materials are not intended to be fuel resistant and are not intended to be applied in the Paint Shop.