Exterior Paint If you plan to paint an item that will remain outside, use a durable, non-toxic outdoor paint. Before starting the painting project, coat the rubber with an exterior primer to help the paint adhere, and let it dry completely. You can either brush on the paint or use spray paint.Click to see full answer. Similarly, it is asked, how do you seal paint on rubber?You can also mix acrylic paint with rubber cement or latex to make it flexible and chemically bond with the rubber (but this only works if it is really rubber). I use a type of glue/sealer called mogpog. You can find it in craft shops.Subsequently, question is, does rustoleum work on rubber? There are spray paints, Rust-Oleum FlexiDip spray paint that is a removable rubber coating. And for outdoors, you can use any outdoor paint but you should prime the rubber first so that the paint will adhere. Moreover, can you use spray paint on rubber? Spray paint is especially useful when used on rubber, but you can use acrylic or enamel paint. The best way to spray paint is that you need to keep the spray bottle away from the surface of the object about 30 cm to 45 cm, and you spray the paint by moving the paint bottle horizontally and gently.How do you apply rubber paint?Step 4: Take a paint brush and dip it into the rubber coating tray. Apply the rubber coating to the surface evenly and quickly. Instead of brush, you can also use a paint roller. Step 5: Apply the coating to the entire surface by re-dipping the brush as needed, until the surface is completely covered.