Over the last 65 years, Sealco evolved from a small screw machine shop to become the primary supplier of air brake valve products to the commercial trailer market in North America. As the industry leader, Sealco's valves are used as the production standard at over 85% of the approximately 625 trailer OEMs in North America. We export to thirty-four countries around the world.

There are literally millions of trailers on the road today utilizing Sealco air brake or suspension valves.