scope:

This specification covers a glass primer used in conjunction with an Isopropyl Alcohol (IPA) or as primer #2 of a two step system. Either primer system is used in conjunction with a polyurethane adhesive sealing compound.

Material Description. This material is a black, solvent based, polyurethane type primer used to condition and promote adhesion to automotive glass. It is applied following application of either IPA, 9981293 or primer # 1, 9982278 and interfaces a polyurethane adhesive sealing compound, Reference: 9982280. It is intended to be used to be used for glass applications where the primed surface has aged a minimum of 30 seconds. It is not intended for use at GM assembly plants where the cycle times may be less than 30 seconds between primer and urethane adhesive application.

Typical Application. Materials approved to this specification are use in bonding adhesive to stationary automotive saftey glass. In conjunction, the glass is bonded to painted automotive body openings such as windshield, backlite and liftgate glass.

Remarks. Refer to the Glass Bonding Decision Tree of the GM Materials Engineering Preferred Materials Catalog (PMC) in the Exteriors Section for specific use of this material.