Welcome to CSD Sealing Systems!

Firestop & Weatherstop Products for Multi-cable and Cable-tray Penetrations

We are the exclusive United States supplier of quality firestop and weatherseal products for multi-cable and cable tray penetrations. From our headquarters in Melrose, Massachusetts, CSD’s team of experienced firestop professionals offers complete design, specification and sales service. A division of Dorn Equipment Corporation, CSD Sealing Systems has been in the firestop business since 1986 and has built an outstanding reputation for meeting customers’ need with quality products delivered on time. CSD Sealing Systems is a registered ISO 9002 compliant company.

Firestop with Actifoam withstands three-hour fire test.

Our products are U.L. classified and have been used in all types of industries around the world.

Use the links above to learn more about our products and company, locate a sales representative for your area, or obtain a free copy of our new Selection Guide on CD-ROM. For additional information about our products, please call our sales hotline at 800-553-8779 or send email to mkp@DornEquipment.com