3M 06580 Marine Adhesive/Sealant Fast Cure 4000 UV, White /

One of the best rv repair and modification sealants.

es un sellador especializado para uso náutico de muy buena calidad recomendable para embarcaciones de recreo como veleros y yates

Product is great, easy to apply. Ensure you clean/ dry surfaces well prior to application and tape off where you don't want over spread. 3M Marine Adhesive Sealant 4000 UV comes in thin metal cartridges like tooth paste not a paper tube. If not shipped in proper packaging, the cartridges will be dented, bent or even punctured. I received two wrapped in plastic bag envelopes both packaged in a paper Amazon bag together. ZERO protection. They're not punctured but are bent up. I had to straighten the bottom where the pull tab is to work in my caulk gun.

This is the best sealer I have ever used, the self-leveling is a great tool that allows the flow into the cracks, also sets up quickly, I did apply this stuff while it was above70 degrees which I believe helped with the cure time It may cost a little more but trust me it is well worth it for sealing the roof on my car trailer.

I bought this product for sealing the lens to a Bomar hatch frame on our sailboat. It worked great and provided good adhesion to both the plastic lens and the metal frame. I then decided to use it when replacing a portlight window. It seems to have worked very well there as well. It seemed to be easier to work with than a competitor's product that I used on a previous portlight. Time will tell as to how well it holds up and remains watertight. I especially liked that the instructions on the tube said that cleanup can be done with isopropyl alcohol. As cheap as isopropyl alcohol is, I was excited to use a cleanup agent that worked well and that I didn't have to feel that I needed to use sparingly due to cost. the alcohol cleaned up the sealant very well. The only negative that I can say is that it is fast cure (as the label says). It was almost too fast cure when applied to the lens. I left it set a bit too long (20-30 minutes) before dressing up the seam and it was difficult to smooth out-- my fault for waiting too long. As long as you clean up the seam and smooth it out relatively soon, it should work great.