SAE J 1800:2013-07-09

This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. This SAE Recommended Practice sets forth a method for testing and evaluating the paintable characteristics of automotive sealers. this document contains three samples preparation procedures: Method 1 - topcoat over cured primer and cured sealer; Method 2 - topcoat over cured sealer; and Method 3 - topcoat over uncured sealer. This SAE test specification is to be used as a method for evaluating the performance of automotive primers and/or topcoats when applied over "cured" or "uncured" sealers. This specification includes a list of the needed test equipment, application and baking parameters, and a glossary of terms describing undesirable characteristics that should be noted by the tester. This specification covers the performance and quality of an automotive topcoat when applied over a sealer, along with the integrity of bond between the paint and sealer. It does not cover sealer performance characteristics, such as sealer to substrate bonding, nor does it include a procedure governing the actual spraying of the topcoat.