BoatLIFE Life-Calk Primer is a one-part, non-flammable, resin-based primer for use on oily woods and metal. Developed by BoatLIFE (The Polysulfide Experts) to promote maximum adhesion with all polysulfide sealants. Improves adhesion of Life-Calk. Use on wood teak and other oily woods. Not needed with two-part Life-Calk.